Nicotine replacement therapy … - Carlos A ... - Entretiens du Carla
Nicotine replacement therapy … - Carlos A ... - Entretiens du Carla
Nicotine replacement therapy … - Carlos A ... - Entretiens du Carla
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<strong>Nicotine</strong> Replacement<br />
Therapies<br />
Consensus of European<br />
Experts on Indications<br />
and Contraindications<br />
1<br />
Chairman:<br />
Jorge-Alberto COSTA e SILVA<br />
With the contribution of:<br />
Gilbert LAGRUE<br />
In collaboration with:<br />
Pierre BARTSCH<br />
Ivan BERLIN<br />
Hedwig BOUDREZ<br />
Magdalena CIOBANU<br />
Tim COLEMAN<br />
Jean DAVER (†)<br />
Mervi HARA<br />
Giovanni INVERNIZZI<br />
<strong>Carlos</strong> JIMENEZ- RUIZ<br />
Georges KOTAROV<br />
Stefano NARDINI<br />
Paraskevi-Voula PATAKA<br />
Jean PERRIOT<br />
Robert RUSU<br />
Rudolph SCHOBERBERGER<br />
Daniel THOMAS<br />
Imre VADASZ<br />
Fleur VAN BLADEREN<br />
Paulo VITORIA<br />
Jean-Pierre ZELLWEGER
.<br />
Summary Summary<br />
- Summary - Summary - Summary<br />
Participants ------------------------- p. 3<br />
Thanks<br />
E. André ------------------------------ p. 4<br />
Chairmen Intro<strong>du</strong>ction<br />
J.A. Costa e Silva ---------------------- p. 4<br />
Conclusions<br />
Synthesis with the contributions of ------ p. 6<br />
P. Bartsch, G. Lagrue, S. Nardini, J. Perriot<br />
Intro<strong>du</strong>ction--------------------------- p. 6<br />
Regulatory status by country-------------- p. 8<br />
Increase in the prescribed dose and possibility<br />
to combine 2 NRTs ---------------------- p. 8<br />
NRT for Temporary Abstinence (TA) -------- p. 9<br />
The proper use of NRT to re<strong>du</strong>ce tobacco<br />
consumption -------------------------- p. 10<br />
Specific indications, limitations and<br />
Contraindications----------------------- p. 12<br />
The case of snus------------------------ p. 13<br />
Conclusions en français<br />
Synthèse avec les contributions de ------- p. 14<br />
P. Bartsch, G. Lagrue, S. Nardini, J. Perriot<br />
Intro<strong>du</strong>ction--------------------------- p. 14<br />
Situation réglementaire par pays ---------- p. 16<br />
Augmentation de la dose prescrite et possibilité<br />
d’associer 2 TSN ------------------------ p. 16<br />
Les TSN en abstinence temporaire (AT) ------ p. 17<br />
Le bon usage des TSN dans la ré<strong>du</strong>ction de<br />
la consommation de tabac --------- ------- .18<br />
Indications spécifiques, limites et<br />
contre-indications -----------------------p 20<br />
Le cas <strong>du</strong> snus --------------------------p. 21<br />
Session 1<br />
Current situation of Indications<br />
and Contraindications for <strong>Nicotine</strong><br />
Replacement Therapies<br />
Synthesis with the contribution of<br />
représentatives from EU countries<br />
Participants and E. Kralikova (CZ) ----------- p. 23<br />
Session 2<br />
NRTs in subjects under the age<br />
of 18 in case of pregnancy or<br />
cardiovascular diseases<br />
Use of NRTs among adolescents<br />
J.P. Zellweger -------------------------- p. 32<br />
Recommendations <strong>du</strong>ring pregnancy<br />
T. Coleman ---------------------------- p. 36<br />
Cardiovascular safety of NRTs<br />
D. Thomas ---------------------------- p. 42<br />
Session 3<br />
Re<strong>du</strong>ction in consumption<br />
Re<strong>du</strong>cing cigarette’s consumption<br />
J. Perriot------------------------------- p. 48<br />
Session 4<br />
Increase in the prescribed dose and<br />
possibility to combine 2 NRTs<br />
How to optimise the effectiveness of nicotine<br />
<strong>replacement</strong> therapies?<br />
I. Berlin ------------------------------- p. 58<br />
Session 5<br />
Temporary cessation<br />
<strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> for temporary<br />
abstinence<br />
C. Jiménez-Ruiz ------------------------ p. 64<br />
Session 6<br />
European Program PESCE<br />
J. Daver ------------------------------ p. 72<br />
2
Participants - Participants<br />
Participants - Participants - Participants<br />
Pierre BARTSCH Pneumology Belgium<br />
Ivan BERLIN Pharmacology France<br />
Hedwig BOUDREZ Psychology Belgium<br />
Magdalena CIOBANU Pneumology Roumania<br />
Tim COLEMAN Physician England<br />
Jorge-Alberto COSTA e SILVA Psychiatry Brazil<br />
Jean DAVER Biology France<br />
Mervi HARA Public Health Finland<br />
Giovanni INVERNIZZI Pneumology Italy<br />
<strong>Carlos</strong> JIMENEZ-RUIZ Pneumology Spain<br />
George KOTAROV Public Health Bulgaria<br />
Stefano NARDINI Pneumology Italy<br />
Paraskevi PATAKA Pneumology Greece<br />
Jean PERRIOT Pneumology France<br />
Robert RUSU Pneumology Luxembourg<br />
Rudolph SCHOBERBERGER Psychology Austria<br />
Daniel THOMAS Cardiology France<br />
Imre VADASZ Public Health Hungary<br />
Fleur VAN BLADEREN Public Health The Netherlands<br />
Paulo VITORIA Psychology Portugal<br />
Jean-Pierre ZELLWEGER Pneumology Switzerland<br />
By E-mail<br />
Eva KRALIKOVA Public Health Czech Republic<br />
Pierre Fabre participants<br />
Étienne ANDRÉ Public health<br />
Jacques CHEVALLET Pierre Fabre Santé Manager<br />
Philippe CROUZIT Pharmacist, France Marketing Manager<br />
Clément LAUR IDPF, Development Project Manager<br />
Jean-Marie PIBOURDIN Pierre Fabre Santé, Medical Director<br />
Guillaume RANDAXHE Project Manager OTC<br />
Nabil SAICHI IDPF, Clinical trials<br />
3 Participants
Thanks<br />
E. André<br />
Pierre Fabre Laboratories would like to<br />
express their warm thanks to all the<br />
participants of this 18 th Entretien <strong>du</strong> <strong>Carla</strong><br />
which was on the theme: “Consensus of<br />
European Experts on Indications and<br />
Contraindications of <strong>Nicotine</strong> Replacement<br />
Therapies (NRTs)”.<br />
NRTs are available throughout Europe.<br />
Scientific works and publications as well as<br />
the experience acquired by the regular use<br />
of these treatments confirm their major<br />
interest as accompanying measures for the<br />
smoker in general and in smoking cessation<br />
in particular.<br />
In addition to smoking cessation, their<br />
use and indications vary in all 27 EU<br />
countries. This consensus of experts will<br />
have the task to draw up proposals so as to<br />
standardize Indications and Contraindications<br />
of <strong>Nicotine</strong> Replacement<br />
Therapies. So, the objective of this<br />
<strong>Entretiens</strong> <strong>du</strong> <strong>Carla</strong> hence lies in the fact<br />
that a genuine consensus between experts<br />
takes place. Moreover, these same experts<br />
have dedicated themselves to the<br />
elaboration of conclusions based on their<br />
experience, competence and motivation to<br />
develop a priority aspect in public health.<br />
Through this report, the reader will not<br />
only appreciate the quality of their<br />
presentations but also their determination<br />
to find conclusions on the various<br />
submitted questions. ■<br />
Intro<strong>du</strong>ction<br />
J.A.<br />
Costa e Silva<br />
This was the 18 th edition of “Les<br />
<strong>Entretiens</strong> <strong>du</strong> <strong>Carla</strong>”, this one focusing on<br />
<strong>Nicotine</strong> Replacement Therapies (NRTs).<br />
A homogenous group of medical doctors,<br />
researchers, and other experts have met in<br />
Castres, France with the patronage of Pierre<br />
Fabre Laboratories. This consensus and<br />
exchange meeting of high scientific level,<br />
gather experts with the aim of drawing up<br />
recommendations and guidelines thanks to<br />
the contribution of distinguished specialists.<br />
This consensus of expert will have the<br />
task to draw up proposals so as to<br />
standardize Indications and Contraindications<br />
of <strong>Nicotine</strong> Replacement<br />
Therapies. This involves re<strong>du</strong>ction in<br />
consumption, temporary cessation, increase<br />
in the dose prescribed and the ability to<br />
combine 2 NRTs, NRTs in persons under the<br />
age of 18, the use <strong>du</strong>ring pregnancy, and in<br />
case of cardio-vascular diseases.<br />
All of these exciting topics will surely<br />
lead to discussions and conclusions that will<br />
benefit smokers. We sincerely thank the<br />
efforts and dedication of all participants<br />
and the ethical support of Pierre Fabre<br />
Laboratories. ■<br />
4
Participants - Participants<br />
Participants - Participants - Participants<br />
From left to right and from the top to the front:<br />
E. André, J.M. Pibourdin, H. Boudrez, G. Randaxhe, C. Laur, C. Jiménez-Ruiz, R. Rusu, R. Schoberberger,<br />
S. Brignatz, I. Berlin, D. Thomas, I. Vadasz, G. Kotarov, N. Saïchi<br />
F. Van Bladeren, M. Hara, M. Ciobanu, P.V. Pataka, G. Invernizzi, P. Bartsch, J. Perriot,<br />
J.A. Costa e Silva, P. Vitoria, S. Nardini.<br />
5<br />
Thanks & Intro<strong>du</strong>ction
Conclusions<br />
With contributions<br />
from:<br />
P. Bartsch, G. Lagrue,<br />
S. Nardini, J. Perriot<br />
Intro<strong>du</strong>ction<br />
Tobacco use is the leading cause of premature<br />
mortality in the world and is responsible<br />
for a very high morbidity rate. This addictive<br />
behavior is a chronic and relapsing disorder,<br />
reinforced by a physical dependence attributable<br />
mainly to nicotine. This dependence<br />
evolves over a number of years, often marked<br />
by attempts to quit and relapses.<br />
Regardless of the strategy selected to stop<br />
smoking, psycho-behavioral support, medical<br />
treatment and follow-up over time must be<br />
made available as they increase the chances<br />
of the patient’s potential success in quitting<br />
and re<strong>du</strong>ce the risk of relapses.<br />
The choice of drugs is based on the patient’s<br />
medical history, the risk of adverse effects, the<br />
degree of dependence, related comorbidities,<br />
the existence of potential contraindications<br />
and user precautions, potential risks of drug<br />
dependence and misuse, the patient’s preferences<br />
and the cost of the <strong>therapy</strong>.<br />
This consensus of experts has the task to<br />
draw up proposals so as to standardize Indications<br />
and Contraindications of <strong>Nicotine</strong><br />
Replacement Therapies. This involves re<strong>du</strong>ction<br />
in consumption, temporary cessation,<br />
increase in the dose prescribed and the ability<br />
to combine 2 NRTs , NRTs in persons under the<br />
age of 18, contraindications: pregnancy,<br />
cardiovascular diseases.<br />
6<br />
From left to right,<br />
D. Thomas,<br />
J. Perriot,<br />
J-M. Pibourdin,<br />
I. Berlin,<br />
F. Van Bladeren<br />
(slightly hidden),<br />
I. Vadasz,<br />
R. Rusu,<br />
P.V. Pataka,<br />
H. Martino,<br />
N. Saïchi.
Conclusion 1<br />
<strong>Nicotine</strong> Replacement Therapy<br />
State of the art<br />
<strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> (NRT) is the<br />
oldest and best evaluated <strong>therapy</strong> in the<br />
fight against tobacco use. According to a<br />
meta-analysis of 132 trials (> 40,000 smokers)<br />
including a 12-month follow-up period, the<br />
odds ratio for smoking abstinence compared<br />
to a placebo is 1.58 (IC 95%:1.66 to 1.88).<br />
The benefit/risk ratio is optimal in<br />
comparison to other pharmacological<br />
treatments.<br />
1.1. Choosing the optimal NRT dose is a<br />
key factor to succeed<br />
NRT follow-up is crucial to adjust doses<br />
(according to clinical symptoms and the level<br />
of CO in expired air), potentially combine<br />
oral administration forms and transdermal<br />
absorption forms.<br />
NRT has proven to be efficacious without<br />
psychological support. Nevertheless,<br />
combining the use of NRT with psychological<br />
support increases the likelihood to quit.<br />
1.2. Drug treatments are indicated for<br />
dependent patients<br />
Generally, the pharmacological<br />
dependence is assessed with the Fagerström<br />
Test for <strong>Nicotine</strong> Dependence (FTND).<br />
Although the FTND score is not a criterion to<br />
prescribe NRT, average and high dependence<br />
scores suggest the use of NRT in order to<br />
re<strong>du</strong>ce withdrawal symptoms.<br />
1.3. Usefulness of NRT lies on:<br />
- the largely demonstrated efficacy with<br />
long-term follow-up,<br />
- the very low risk of serious adverse<br />
effects,<br />
- the harmless nature of the adverse<br />
effects (often related to the route of<br />
administration).<br />
7<br />
1.4. In case of comorbidities<br />
Because of the very favorable adverse<br />
effect profile, NRT can be prescribed in the<br />
case of comorbidities (coronary artery<br />
disease, peripheral atherosclerosis, chronic<br />
obstructive pulmonary disease [COPD],<br />
severe kidney failure, neuropsychiatric<br />
disorders, etc).<br />
Conclusions
Conclusion 2<br />
Proper use of NRT<br />
- Success rates improve if the daily NRT<br />
dose is close to nicotine’s daily dose inhaled<br />
while smoking,<br />
- The use of NRT should always be<br />
combined with behavioural treatment,<br />
- Patients who are using NRT concomitantly<br />
with smoking are not exposed to<br />
cardiovascular complications,<br />
- Length of NRT use must be specific to<br />
the patient, and in particular, to the patient’s<br />
clinical response when NRT is tapered down<br />
or stopped.<br />
There is no experimental evidence in<br />
combining NRT with Bupropion, more<br />
research should be considered; the<br />
combination of NRT with varenicline has not<br />
been investigated until now (June 2008);<br />
these combinations are therefore not<br />
recommended.<br />
Regulatory status<br />
by country<br />
<strong>Nicotine</strong> Replacement Therapies are<br />
available throughout Europe. Scientific works<br />
and publications, as well as experience<br />
acquired by the regular use of these treatments<br />
confirm their major interest as accompanying<br />
measures for the smoker in general and in<br />
smoking cessation in particular.<br />
In addition to smoking cessation, their use,<br />
indications and contra-indications vary across<br />
the 27 EU countries.<br />
The table pages 24 to 29<br />
compares the status, indications and<br />
contraindications of NRTs country by country.<br />
It illustrates the vast diversity separating the<br />
27 countries of the European Union. This<br />
consensus of expert draws up proposals so as<br />
to standardize Indications and Contraindications<br />
of <strong>Nicotine</strong> Replacement Therapies.<br />
Increase in the<br />
prescribed dose<br />
and possibility to<br />
combine 2 NRTs<br />
Conclusion 3<br />
Indivi<strong>du</strong>al Dose Adaptation<br />
The consensus “Experts Panel” composed<br />
by tobaccologists from different European<br />
countries recommend:<br />
3.1. Initial high fixed dose NRT is not<br />
proven as efficient. Indivi<strong>du</strong>al dose<br />
adaptation may provide better results than<br />
either high or low fixed doses.<br />
3.2. A method for adjusting the dose<br />
would be to measure salivary cotinine before<br />
smoking cessation and to adjust the daily<br />
dose of NRT so as to obtain the same salivary<br />
concentration of cotinine after smoking<br />
cessation, to provide 100% nicotine<br />
<strong>replacement</strong>. Some ongoing studies should<br />
answer these questions.<br />
3.3. Combination of different NRT is<br />
more effective than single NRT treatment<br />
(mostly patches + oral forms).<br />
3.4. Pretreatment by NRT before cessation<br />
date could be of interest.<br />
3.5. NRT can be prolonged over 3 months<br />
as long as needed.<br />
3.6. NRT’s effectiveness can be enhanced<br />
by cognitivo-behavioral <strong>therapy</strong> (CBT).<br />
8
NRT for<br />
Temporary<br />
Abstinence (TA)<br />
Conclusion 4<br />
In relation with the daily experience,<br />
experts recommend NRT for TA in three<br />
different situations:<br />
4.1. To those smokers, unwilling to quit,<br />
who are forced to live in smoke-free<br />
environment and, as a consequence, are<br />
suffering from craving and nicotine<br />
withdrawal symptoms.<br />
4.2. To hospitalized smokers , who do not<br />
want to quit. In these cases, NRT should be<br />
considered as a first-line medication <strong>du</strong>e to<br />
its fast action and its safety regarding<br />
interactions with other medications.<br />
9<br />
4.3. To smokers in elective surgery, who<br />
do not want to quit. In these cases, TA should<br />
be recommended at least 8-4 weeks before<br />
surgery. In these cases, NRT should be<br />
considered as a first-line medication,<br />
although other medication can also be<br />
considered as second-line treatment.<br />
Note 4:Definition of TA<br />
A smoker in temporary abstinence (TA) can<br />
be defined as a smoker who does not want<br />
to quit and, for different reasons, must<br />
refrain from smoking <strong>du</strong>ring a period of<br />
time: meeting, hospital, psychiatric unit,<br />
transport, workplace, restaurant…<br />
From left to right,<br />
S. Nardini, G. Invernizzi and M. Ciobanu.<br />
Conclusions
The proper use<br />
of NRT to re<strong>du</strong>ce<br />
tobacco<br />
consumption<br />
Conclusion 5<br />
Towards total cessation<br />
Re<strong>du</strong>cing tobacco consumption is a decision<br />
that must be supported and its objective must<br />
be to allow the smoker to decide when to quit<br />
tobacco completely, with the support of his<br />
physician or another health professional or<br />
tobaccologist.<br />
Note 5:The only proven benefit of smoking re<strong>du</strong>ction is to<br />
increase the likelihood of complete cessation.<br />
Tobacco use is responsible for high morbidity and mortality. Cigarettes are<br />
the main form of tobacco consumption and the most toxic and addictive.<br />
While nicotine is the agent that causes tobacco dependence, the majority of<br />
risks relate to other components of smoke pro<strong>du</strong>ced by the combustion of<br />
tobacco (nicotine may be harmful itself, too).<br />
No threshold value exists in terms of tobacco toxicity, but it is generally dosedependent.<br />
Therefore, the best way to re<strong>du</strong>ce the risks of tobacco use is to<br />
never start smoking or to quit completely.<br />
However, it is worthwhile recommended smokers re<strong>du</strong>ce their consumption<br />
of tobacco when:<br />
■ they have failed in their attempt to quit;<br />
■ they cannot or do not want to stop smoking immediately;<br />
■ they do not want to stop smoking yet but are willing to re<strong>du</strong>ce their<br />
tobacco consumption;<br />
■ they prepare a complete stop, in order to facilitate the cessation process.<br />
10<br />
Recommendatio<br />
Conclusion 6<br />
Achieve 50% re<strong>du</strong>ction<br />
This aims is to target a 50% re<strong>du</strong>ction of<br />
consumption with no compensatory smoking.<br />
This can be verified by measuring the expired<br />
CO.<br />
If the final aim, smoking cessation or 50%<br />
re<strong>du</strong>ction is not reached after six months (of<br />
re<strong>du</strong>ced consumption), the smoking re<strong>du</strong>ction<br />
strategy can be considered as a failure and<br />
reworked.<br />
If the 50% re<strong>du</strong>ction of consumption has<br />
been achieved, the health professionnal must<br />
ensure re<strong>du</strong>ction is checked regularly, as well as<br />
the patient’s tolerance, and increase the<br />
smoker’s motivation to decide to quit<br />
completely.<br />
10
Conclusion 7<br />
Oral form or Patches for re<strong>du</strong>cing<br />
tobacco consumption<br />
To be effective, re<strong>du</strong>ction in<br />
consumption has to be supported by NRT.<br />
Oral forms are to be selected as a priority<br />
in accordance with the smoker’s<br />
preferences. Patches and oral forms may<br />
also be combined.<br />
One should be aware of a high(er) level<br />
of nicotinemia when NRT is used for<br />
re<strong>du</strong>cing smoking when the smoker at the<br />
same time is not re<strong>du</strong>cing the amount of<br />
cigarettes as planned.<br />
The experts indicate that oral tobacco<br />
pro<strong>du</strong>cts used in certain countries such as<br />
snus, to re<strong>du</strong>ce the consumption of<br />
cigarettes carry the risk of causing somatic<br />
pathologies and addiction, and therefore<br />
must be the subject of further studies<br />
before public authorities can authorize<br />
their sale. See Conclusion 14.<br />
Conclusion 8<br />
Re<strong>du</strong>ction and pregnancy<br />
As much of the harm that smoking causes<br />
in pregnancy is dose dependant (e.g.<br />
re<strong>du</strong>ced birth weight), pregnant women<br />
should try to quit when they are pregnant<br />
and if they cannot stop smoking, they should<br />
re<strong>du</strong>ce their smoking as much as possible. If,<br />
using only behavioural methods, women are<br />
not able to stop smoking then they could<br />
consider using nicotine <strong>replacement</strong> <strong>therapy</strong><br />
(NRT) to help them stop (see Conclusion 12).<br />
Much of the toxicity from tobacco use<br />
<strong>du</strong>ring pregnancy may be caused by the<br />
pro<strong>du</strong>cts of combustion* (see note in the<br />
margin) that are given off when tobacco is<br />
burned (e.g. carbon monoxide or polycyclic<br />
aromatic hydrocarbons) and so NRT may be<br />
safer than continued smoking.<br />
11<br />
However, the impact on women’s total<br />
nicotine exposure (i.e. from both NRT and<br />
continued smoking), of using NRT for<br />
smoking re<strong>du</strong>ction in pregnancy remains<br />
unknown. Research is needed to determine<br />
whether or not using NRT to help re<strong>du</strong>ce<br />
(and not quit) smoking in pregnancy also<br />
re<strong>du</strong>ces the delivery of toxins and is less<br />
harmful to the fetus than continued<br />
maternal smoking.<br />
Conclusion 9<br />
Re<strong>du</strong>ction in a patient with heart<br />
disease<br />
Many studies have confirmed the perfect<br />
safety of NRT in association with a re<strong>du</strong>ction<br />
in tobacco consumption for patients with<br />
heart diseases (including coronary patients).<br />
Also, even it is important to emphasize<br />
the necessity of total abstinence for smokers<br />
with heart disease to minimize health risks<br />
from tobacco, re<strong>du</strong>ction should eventually<br />
be promoted as a first step to achieving<br />
cessation in smokers unwilling or perceiving<br />
themselves unable to quit. Nevertheless, we<br />
don't know the real benefits of this strategy<br />
on health outcomes, especially in coronary<br />
patients.<br />
These recommendations confirm the high<br />
tolerance of NRT and their usefulness as<br />
excellent tools to help stop and re<strong>du</strong>ce<br />
tobacco use. They also stress the importance<br />
of supporting smokers and highlight the key<br />
role of the physician or another health<br />
worker or tobaccologist who must adjust the<br />
choice of <strong>therapy</strong> in order to meet the<br />
smoker’s needs and possibilities.<br />
Le <strong>Carla</strong>.<br />
Conclusions<br />
* It is not<br />
definite that<br />
carbon monoxyde<br />
is the<br />
primary cause<br />
of harm from<br />
smoking in<br />
pregnancy.
Specific<br />
indications,<br />
limitations and<br />
Contraindications<br />
Conclusion 10<br />
NRT for Cardiac patients<br />
The Experts from different European<br />
countries recommend the use of NRT for<br />
Cardiac Patients:<br />
- NRT is safe in Coronary Heart Disease<br />
(CHD) and does not worsen cardiac<br />
conditions.<br />
- NRT must be recommended to CHD<br />
patients who are smokers.<br />
- NRT can be prescribed at the exit of the<br />
Coronary Care Unit immediately after an<br />
acute coronary syndrome.<br />
- The prescription must aim at<br />
substituting for usual nicotine intake.<br />
Conclusion 11<br />
NRT for youngsters<br />
Preventing tobacco use among young<br />
people is a health priority.<br />
The risks are rapid addiction to nicotine,<br />
as well as to other drugs (alcohol, marijuana<br />
& cocaine) and to get involved in other risky<br />
behaviors. The risk of a quick addiction<br />
<strong>du</strong>ring this period of life is <strong>du</strong>e to the<br />
phenomenon of the Brain “pruning” which<br />
occurs only at this phase of life. This make<br />
the brain vulnerable and any kind of<br />
addictive drug used in this period of life will<br />
create permanent dopaminergic brain<br />
circuits for that drug. Tobacco is among the<br />
most powerful drugs to create this brain<br />
pleasure pathway.<br />
Concerning health problems, adolescents<br />
increase their resting heart rates and<br />
wheezing, gasping and shortness of breath;<br />
they will decrease their physical<br />
performance, their lung function and<br />
en<strong>du</strong>rance. They will experience slow<br />
growth of lung function.<br />
There are only weak experimental<br />
evidences that NRT is effective in smoking<br />
cessation of youngsters. It is considered a<br />
high priority to launch well designed<br />
conclusive smoking cessation studies with<br />
NRT in youth.<br />
Conclusion 12<br />
NRT for pregnant women<br />
Stopping smoking among pregnant<br />
women is a public health priority. Experts<br />
recommend:<br />
12.1. In case of planned pregnancy, to<br />
intro<strong>du</strong>ce a smoking cessation plan for both<br />
the woman and her partner/spouse.<br />
12.2. During pregnancy, to encourage<br />
cessation with behavioural support only<br />
before 3rd month.<br />
12.3. If no cessation with behavioural<br />
<strong>therapy</strong>:<br />
a. To discuss risks & benefits of NRT with<br />
the pregnant woman (and sometimes with<br />
husband or partner);<br />
b. To encourage decision to stop<br />
smoking with NRT. NRT however should<br />
then be combined with behavioural support<br />
as well.<br />
This recommendation is to allow NRT for<br />
pregnant women.<br />
From left to right, M. Hara, R. Schoberberger,<br />
G. Kotarov.<br />
12
The case of snus<br />
Conclusion 13<br />
A harmful and addictive substance<br />
There is no doubt that snus (swedish oral<br />
snuff) is a harmful and addictive substance.<br />
All tobacco pro<strong>du</strong>cts are potentially<br />
lethal and lead to tobacco related illnesses.<br />
The priority should be to encourage all<br />
tobacco users to quit and potential new<br />
customers not to start.<br />
After a thorough review of the published<br />
scientific evidence the International Agency<br />
for Research on Cancer (IARC) Monograph<br />
Working Group concluded in 2004 that<br />
smokeless tobacco is carcinogenic to<br />
humans. All types of smokeless tobacco<br />
contain different amounts of nicotine and<br />
nitrosamines. Hundreds of millions of people<br />
are addicted to smokeless tobacco, and its<br />
use by young people is increasing in many<br />
countries. The IARC Working Group found<br />
that there is no supportive evidence that the<br />
low prevalence of smoking in Sweden is <strong>du</strong>e<br />
to use of moist snus.<br />
Smoking and consumption of snus<br />
increase also the risk of diabetes and<br />
mortality after an acute myocardial<br />
infarction. In addition it increases the risk of<br />
vascular spasm and angina pectoris and the<br />
risk of complications after surgical<br />
treatment.<br />
13<br />
Conclusion 14<br />
Snus and smokeless pro<strong>du</strong>cts<br />
aren’t NRT<br />
If smokers need nicotine in cessation<br />
there are pro<strong>du</strong>cts containing clean nicotine.<br />
It is not the role of the public health<br />
community to encourage the tobacco<br />
companies to develop these pro<strong>du</strong>cts.<br />
In general, when using nicotine<br />
<strong>replacement</strong> pro<strong>du</strong>cts in smoking cessation,<br />
their use is an aid to cope with the nicotine<br />
withdraw symptoms only, followed by a<br />
gra<strong>du</strong>ally decreasing. The goal is the total<br />
abstinence of nicotine including NRT.<br />
It is very unlikely that the use of snuff will<br />
be gra<strong>du</strong>ally decreased if used in smoking<br />
re<strong>du</strong>ction or cessation. Moreover, discussions<br />
about health benefits of snuff remind us very<br />
much on the situation in the mid-1970s when<br />
the health hazards of “light” cigarettes were<br />
systematically downplayed.<br />
Conclusions<br />
Makla.
Conclusions<br />
Avec les contributions<br />
de :<br />
P. Bartsch, G. Lagrue,<br />
S. Nardini, J. Perriot.<br />
Intro<strong>du</strong>ction<br />
Le tabagisme est la première cause de mortalité<br />
prématurée dans le monde avec un taux<br />
de morbidité très important. Il est généralement<br />
lié à un comportement addictif, chronique<br />
et récidivant, renforcé par une dépendance<br />
physique in<strong>du</strong>ite principalement par la<br />
nicotine.<br />
Cette dépendance évolue sur de nombreuses<br />
années, souvent marquées de tentatives<br />
d’arrêt et de rechutes.<br />
Quelle que soit la stratégie de sevrage envisagée,<br />
un soutien psycho-comportemental ainsi<br />
qu’un traitement et un suivi médical dans le<br />
temps doivent être proposés, car ils augmentent<br />
les chances de sevrage des patients et ré<strong>du</strong>isent<br />
le risque de rechute.<br />
Le groupe de travail - Intervention <strong>du</strong> Dr Jean Perriot (France).<br />
Les médicaments sont sélectionnés selon<br />
divers critères : les antécédents <strong>du</strong> patient, le<br />
risque d'effets indésirables, le degré de dépendance,<br />
les co-morbidités associées, l'existence<br />
de contre-indications éventuelles et de précautions<br />
d’emploi, les risques éventuels de<br />
pharmacodépendance et de mésusage, les préférences<br />
<strong>du</strong> patient et le coût <strong>du</strong> traitement.<br />
Ce consensus d’experts a pour objectif de<br />
définir des propositions visant à standardiser<br />
les indications et les contre-indications des traitements<br />
de substitution nicotinique (TSN). Ces<br />
propositions sont notamment la ré<strong>du</strong>ction de<br />
la consommation, le sevrage temporaire, l’augmentation<br />
de la dose prescrite et la possibilité<br />
d’associer 2 TSN, l’usage des TSN chez les indivi<strong>du</strong>s<br />
âgés de moins de 18 ans, les femmes<br />
Conclusion enceintes et les patients 2 atteints de maladies<br />
cardio-vasculaires.<br />
14
Conclusion 1<br />
Traitement de substitution<br />
nicotinique - Vue d’ensemble<br />
Le traitement de substitution nicotinique<br />
(TSN) est un des traitements d’aide à l’arrêt<br />
<strong>du</strong> tabac le plus ancien et le mieux évalué.<br />
Selon une méta-analyse à partir de 132<br />
essais (plus de 40 000 fumeurs), l’Odd-ratio<br />
d’abstinence comparativement à un placebo<br />
est de 1,58 avec un recul de 12 mois (IC 95 % :<br />
1,66 à 1,88). Son rapport bénéfice / risque<br />
est optimal comparativement aux autres<br />
traitements pharmacologiques.<br />
1.1. Le choix de la dose est un important<br />
facteur de réussite.<br />
Il est indispensable de suivre les patients<br />
sous TSN pour adapter les posologies (selon<br />
les symptômes cliniques et la mesure <strong>du</strong> taux<br />
de CO dans l’air expiré), en associant<br />
éventuellement des formes orales et<br />
transcutanées. Bien que l’efficacité d’un TSN<br />
sans aucun soutien psychologique ait été<br />
démontrée, les chances de sevrage<br />
tabagique sont augmentées lorsque cette<br />
aide est fournie.<br />
1.2. Les traitements pharmacologiques<br />
sont indiqués chez les patients dépendants.<br />
Généralement, la dépendance pharmacologique<br />
est évaluée à l’aide <strong>du</strong> test de<br />
Fagerström qui évalue la dépendance<br />
nicotinique (FTND). Le score de dépendance<br />
<strong>du</strong> FTND n’est pas un critère permettant de<br />
prescrire un TSN mais simplement un score :<br />
une dépendance moyenne et élevée<br />
indiquerait qu’il est possible de recourir à un<br />
TSN afin de ré<strong>du</strong>ire les symptômes de<br />
sevrage.<br />
1.3. L’utilité d’un TSN s’appuie sur les<br />
éléments suivants :<br />
- une efficacité largement démontrée<br />
avec suivis à long terme,<br />
- un très faible risque d’effets<br />
indésirables graves,<br />
15<br />
- le caractère bénin de ses effets<br />
indésirables (souvent liés au mode<br />
d’administration).<br />
1.4. En cas de co-morbidités<br />
Les TSN peuvent être prescrits en cas de<br />
co-morbidités (maladie coronarienne,<br />
athérosclérose périphérique, bronchopneumopathie<br />
chronique obstructive,<br />
insuffisance rénale sévère, pathologie<br />
neuropsychiatrique, etc.) en raison de leurs<br />
profils d’effets indésirables très favorables.<br />
Conclusions
Pour un bon usage des TSN<br />
Les taux de réussite sont améliorés si la<br />
dose de nicotine quotidienne des TSN est<br />
proche de celle inhalée par les fumeurs.<br />
- l’usage d’un TSN doit toujours être<br />
associé à une thérapie comportementale.<br />
- la poursuite <strong>du</strong> tabagisme pendant un<br />
traitement de substitution nicotinique<br />
n’expose pas les patients à la survenue de<br />
complications cardiovasculaires.<br />
- la <strong>du</strong>rée <strong>du</strong> traitement doit être<br />
indivi<strong>du</strong>alisée selon le patient et notamment<br />
selon sa réaction à l’arrêt ou à une<br />
diminution progressive <strong>du</strong> traitement.<br />
En l’absence de données expérimentales,<br />
les recherches portant sur l’association d’un<br />
TSN et <strong>du</strong> Bupropion doivent être<br />
approfondies. De la même manière,<br />
l’association d’un TSN à la varénicline n’a pas<br />
encore été étudiée (en juin 2008). Ces<br />
associations ne sont donc pas<br />
recommandées.<br />
Situation<br />
réglementaire<br />
par pays<br />
Les traitements de substitution<br />
nicotinique sont disponibles dans toute<br />
l’Europe. Les travaux et les publications<br />
scientifiques, ainsi que l’expérience acquise<br />
par l’usage régulier de ces traitements,<br />
confirment que ces mesures<br />
d’accompagnement représentent un intérêt<br />
majeur pour le fumeur en général et pour le<br />
sevrage tabagique en particulier.<br />
Outre le sevrage tabagique, leur usage,<br />
indications et contre-indications sont<br />
différents dans les 27 pays de l'UE.<br />
Le tableau pages 24 à 29 décrit<br />
de manière comparative, pays par pays, le<br />
statut, les indications et les contreindications<br />
des TSN. Il témoigne de la grande<br />
diversité entre les 27 pays de l’Union<br />
Européenne. Ce consensus d’experts définit<br />
des propositions visant à standardiser les<br />
indications et les contre-indications des<br />
traitements de substitution nicotinique.<br />
Augmentation de<br />
la dose prescrite<br />
et possibilité<br />
d’associer 2 TSN<br />
Conclusion 3<br />
Adaptation de la dose indivi<strong>du</strong>elle<br />
Les recommandations <strong>du</strong> « Panel<br />
d’experts », constitué de tabacologues<br />
européens, sont les suivantes :<br />
3.1. L’efficacité d’une dose initiale fixe de<br />
TSN n’a pas été démontrée. Par opposition à<br />
des doses fixes (élevées ou faibles),<br />
l’adaptation indivi<strong>du</strong>elle des doses pourrait<br />
donner de meilleurs résultats.<br />
3.2. La dose pourrait être ajustée en<br />
mesurant la cotinine salivaire avant le<br />
sevrage tabagique puis en ajustant la dose<br />
quotidienne de TSN afin d’obtenir la même<br />
concentration de cotinine salivaire après<br />
l’arrêt. Il serait ainsi possible d’obtenir un<br />
substitut nicotinique totalement équivalent.<br />
Certaines études en cours devraient<br />
permettre de répondre à ces questions.<br />
3.3. L’association de plusieurs TSN est plus<br />
efficace qu’un TSN unique (principalement<br />
patchs et formes orales).<br />
3.4. Avant le sevrage, un pré-traitement<br />
par un TSN pourrait présenter un intérêt.<br />
3.5. Un TSN peut être prolongé au-delà<br />
de 3 mois si nécessaire et aussi longtemps<br />
que possible.<br />
3.6. L’efficacité d’un TSN peut être<br />
améliorée par une thérapie cognitivocomportementale<br />
(TCC).<br />
16
Les TSN en<br />
abstinence<br />
temporaire (AT)<br />
Conclusion 4<br />
Forts de leur pratique quotidienne, les<br />
experts recommandent un TSN pour<br />
abstinence temporaire dans trois situations :<br />
4.1. Chez les fumeurs n’ayant aucune<br />
intention d'arrêter de fumer mais qui se<br />
retrouvent dans des environnements non<br />
fumeurs et, de ce fait, souffrent de craving et<br />
<strong>du</strong> syndrome de manque à la nicotine.<br />
4.2. Chez les fumeurs hospitalisés qui ne<br />
veulent pas cesser de fumer. Un TSN doit être<br />
envisagé comme un traitement de première<br />
intention, <strong>du</strong> fait de son action rapide et de<br />
la sécurité de son usage en cas d’interactions<br />
médicamenteuses.<br />
4.3. Chez les fumeurs subissant une<br />
chirurgie élective qui ne veulent pas cesser<br />
de fumer. Dans ce cas, on recommande un AT<br />
au moins 8-4 semaines avant l’intervention<br />
chirurgicale. En outre, bien qu’il soit possible<br />
d’utiliser d’autres médicaments en seconde<br />
intention, le TSN doit être envisagé comme<br />
un traitement de première intention.<br />
17 Conclusions<br />
Note 4:Definition d’une AT<br />
Un fumeur en abstinence temporaire (AT)<br />
peut être défini comme un fumeur n’ayant<br />
aucune intention d’arrêter de fumer mais<br />
qui, pour différentes raisons, doit cesser<br />
son tabagisme pendant une période donnée<br />
: réunions, hôpital, unité psychiatrique,<br />
transport, lieu de travail, restaurant…<br />
De gauche à droite,<br />
D. Thomas, J. Perriot, J-M Pibourdin (caché), I Berlin (de dos).
Le bon usage des<br />
TSN dans la<br />
ré<strong>du</strong>ction de<br />
consommation <strong>du</strong><br />
tabac<br />
Conclusion 5<br />
Vers un arrêt définitif<br />
Ré<strong>du</strong>ire sa consommation de tabac est<br />
une décision qui doit être soutenue<br />
médicalement et qui doit avoir pour objectif<br />
d'amener à terme le fumeur à décider l’arrêt<br />
total, avec l’aide de son médecin, d’un autre<br />
professionnel de santé ou d’un tabacologue.<br />
Conclusion 6<br />
Note 5: La ré<strong>du</strong>ction de consommation de tabac n’a<br />
Atteindre une ré<strong>du</strong>ction de 50 %<br />
Cette recommandation vise à obtenir une<br />
ré<strong>du</strong>ction de 50 % de la consommation<br />
habituelle <strong>du</strong> fumeur sans phénomène de<br />
compensation (vérifié par une mesure <strong>du</strong> CO<br />
expiré).<br />
Si les objectifs ne sont pas atteints au<br />
bout de 6 mois (arrêt <strong>du</strong> tabac ou ré<strong>du</strong>ction<br />
de 50 %), la stratégie doit être considérée<br />
comme un échec et remise en question.<br />
Dans le cas contraire (le fumeur a bien<br />
ré<strong>du</strong>it sa consommation de 50 %), le<br />
médecin doit veiller à valider régulièrement<br />
la ré<strong>du</strong>ction, vérifier la tolérance au<br />
traitement et accroître la motivation <strong>du</strong><br />
fumeur à décider un arrêt définitif.<br />
montré qu’un seul bénéfice : l’augmentation des chances<br />
d’arrêt définitif<br />
Le tabagisme est responsable d'une importante morbidité et mortalité. La<br />
cigarette est le mode de consommation principal <strong>du</strong> tabac, le plus toxique et<br />
addictogène. Bien que la nicotine soit l'agent provoquant la dépendance, les<br />
risques sont essentiellement liés aux autres composants de la fumée pro<strong>du</strong>its<br />
par la combustion <strong>du</strong> tabac; la nicotine peut-être également nocive.<br />
Il n'y a pas de valeur seuil en matière de toxicité tabagique mais la toxicité est<br />
généralement dose-dépendante. Ainsi, la meilleure façon de ré<strong>du</strong>ire à son<br />
minimum les risques in<strong>du</strong>its par le tabagisme est de ne jamais commencer ou<br />
de s'arrêter définitivement.<br />
Il est néanmoins licite de proposer une ré<strong>du</strong>ction de consommation <strong>du</strong> tabagisme<br />
aux fumeurs :<br />
- qui sont en échec quant à leur tentative de sevrage ;<br />
- qui ne peuvent ou ne veulent s'arrêter de fumer tout de suite ;<br />
- qui ne veulent pas s'arrêter de fumer mais sont prêts à ré<strong>du</strong>ire leur consommation<br />
;<br />
- qui se préparent à un arrêt définitif et veulent faciliter ce dernier.<br />
18
Conclusion 7<br />
Formes orales ou patchs pour<br />
ré<strong>du</strong>ire la consommation de tabac<br />
Pour qu’elle soit efficace, la ré<strong>du</strong>ction de<br />
la consommation doit être associée à un TSN.<br />
Les formes orales seront prioritairement<br />
choisies en respectant les goûts <strong>du</strong> fumeur.<br />
L'association d’un patch et d’une forme<br />
orale est également possible. Il faut garder à<br />
l'esprit que la nicotinémie est élevée (ou plus<br />
élevée) lorsqu’un fumeur sous TSN ne ré<strong>du</strong>it<br />
pas sa quantité de cigarettes de la manière<br />
prévue.<br />
Les experts soulignent que des pro<strong>du</strong>its<br />
<strong>du</strong> tabac à usage oral utilisés dans certains<br />
pays visant à ré<strong>du</strong>ire la consommation de<br />
cigarettes (par exemple le snus), ne sont pas<br />
sans risque car ils peuvent in<strong>du</strong>ire des<br />
pathologies somatiques et des addictions : ils<br />
doivent donc donner lieu à des études<br />
approfondies avant que les pouvoirs publics<br />
n’autorisent leur vente.<br />
Voir Conclusion 14.<br />
Conclusion 8<br />
La ré<strong>du</strong>ction chez la femme<br />
enceinte<br />
Autant les conséquences <strong>du</strong> tabagisme<br />
pendant la grossesse sont dose-dépendantes<br />
(par ex, la ré<strong>du</strong>ction <strong>du</strong> poids à la naissance),<br />
autant une femme enceinte doit essayer<br />
d’arrêter de fumer pendant sa grossesse. Si<br />
elle ne peut s’arrêter, elle doit ré<strong>du</strong>ire son<br />
tabagisme autant que possible. Si une<br />
femme ne peut s’arrêter de fumer par les<br />
seules méthodes comportementales, alors<br />
elle peut envisager l’usage de substituts<br />
nicotiniques pour l’aider à s’arrêter (voir<br />
conclusion 12).<br />
Une grande partie de la toxicité <strong>du</strong><br />
tabagisme observée pendant la grossesse<br />
peut être provoquée par les pro<strong>du</strong>its de<br />
combustion* (voir notule) <strong>du</strong> tabac (par<br />
19<br />
exemple, monoxyde de carbone ou<br />
hydrocarbures aromatiques polycycliques)<br />
aussi les TSN sont moins à risques que la<br />
poursuite <strong>du</strong> tabagisme.<br />
Cependant l’impact d’une exposition à<br />
des apports cumulés en nicotine (TSN et<br />
poursuite <strong>du</strong> tabagisme), comparé à l’usage<br />
de TSN pour ré<strong>du</strong>ire la consommation en cas<br />
de grossesse reste inconnu. Des études sont<br />
nécessaires pour déterminer si l’usage des<br />
TSN pour ré<strong>du</strong>ire la consommation (et non<br />
pour arrêter) pendant la grossesse, diminue<br />
également le risque toxique et que cet usage<br />
est moins à risque pour le fœtus que la<br />
poursuite <strong>du</strong> tabagisme maternel.<br />
Conclusion 9<br />
La ré<strong>du</strong>ction chez le patient<br />
coronarien<br />
De nombreuses études ont confirmé la<br />
parfaite sécurité <strong>du</strong> TSN dans le cadre d’une<br />
ré<strong>du</strong>ction de la consommation de tabac chez<br />
les patients cardiaques (y compris les patients<br />
coronariens).<br />
Ainsi, même s’il est important d’insister<br />
sur la nécessité d’une abstinence totale chez<br />
les patients coronariens pour effectivement<br />
ré<strong>du</strong>ire le risque <strong>du</strong> tabagisme, la ré<strong>du</strong>ction<br />
de consommation peut éventuellement être<br />
proposée comme un premier pas vers l’arrêt<br />
total chez des fumeurs non motivés ou se<br />
sentant incapables d’arrêter d’emblée.<br />
Cependant, les bénéfices réels d’une telle<br />
stratégie ne sont pas connus, en particulier<br />
chez les patients coronariens.<br />
Ces recommandations confirment la<br />
bonne tolérance et l'utilité des TSN : ce sont<br />
d’excellents outils d'aide à l'arrêt et<br />
ré<strong>du</strong>ction <strong>du</strong> tabagisme. Elles soulignent<br />
également l’importance d’un soutien aux<br />
fumeurs et indiquent le rôle essentiel <strong>du</strong><br />
médecin, d’un autre professionnel de santé<br />
ou d’un tabacologue, qui doit choisir le<br />
traitement afin de répondre aux besoins et<br />
aux possibilités <strong>du</strong> fumeur.<br />
Conclusions<br />
*Il n’a pas<br />
été démontré<br />
que le<br />
monoxyde de<br />
carbone est le<br />
principal<br />
élément nocif<br />
en cas de<br />
tabagisme<br />
pendant la<br />
grossesse.
Indications<br />
spécifiques,<br />
limites et<br />
contre-indications<br />
Conclusion 10<br />
TSN chez les patients cardiaques<br />
Les experts des différents pays européens<br />
recommandent l’utilisation des TSN chez les<br />
patients cardiaques :<br />
- Un TSN est sûr en cas de coronaropathie<br />
et n'aggrave pas les pathologies cardiaques,<br />
- Le TSN doit être recommandé chez les<br />
patients coronariens qui fument,<br />
- Le TSN peut être prescrit immédiatement<br />
après un syndrome coronaire aigu,<br />
dès la sortie de l’Unité de Soins Intensifs,<br />
- La prescription <strong>du</strong> TSN doit viser à<br />
remplacer l’apport nicotinique à son niveau<br />
de consommation habituelle.<br />
Conclusion 11<br />
TSN chez les adolescents<br />
La prévention <strong>du</strong> tabagisme chez les<br />
jeunes est une priorité en santé publique.<br />
Les risques encourus sont une rapide<br />
addiction à la nicotine, à celle d’autres<br />
drogues (alcool, marijuana et cocaïne) ainsi<br />
que d’autres comportements à risque. Ce<br />
risque d'acquisition rapide d'une<br />
dépendance pendant cette phase de la vie<br />
est lié au "Brain Pruning" qui arrive en cette<br />
période. Cette vulnérabilité, quelque soit le<br />
pro<strong>du</strong>it addictogène, participera à la<br />
création et au maintien de circuits<br />
dopaminergiques spécifiques <strong>du</strong> pro<strong>du</strong>it<br />
consommé. Le tabac est l'une des plus<br />
importantes drogues qui met en place ce<br />
type de circuit de renforcement <strong>du</strong> système<br />
de récompense <strong>du</strong> cerveau.<br />
Les problèmes de santé encourus par les<br />
adolescents sont les suivants : augmentation<br />
de la fréquence cardiaque au repos,<br />
respiration sifflante, halètement,<br />
essoufflement; ré<strong>du</strong>ction de la performance<br />
physique, de la fonction pulmonaire et de<br />
l’en<strong>du</strong>rance.<br />
Les données démontrant qu’un TSN est<br />
efficace dans le sevrage tabagique chez les<br />
jeunes sont peu nombreuses. Il est donc<br />
prioritaire de mener des études concluantes<br />
sur l’arrêt <strong>du</strong> tabac avec les TSN chez les<br />
adolescents.<br />
Conclusion 12<br />
TSN chez la femme enceinte<br />
L’arrêt <strong>du</strong> tabac chez la femme<br />
enceinte est une priorité de santé publique.<br />
Les recommandations des experts sont les<br />
suivantes :<br />
12.1. Si une grossesse est envisagée,<br />
établir un programme d’arrêt <strong>du</strong> tabac pour<br />
la femme et son conjoint / époux.<br />
12.2. Pendant la grossesse, mettre en<br />
place un soutien comportemental<br />
(uniquement avant le 3 e mois) pour<br />
encourager l’arrêt <strong>du</strong> tabac.<br />
12.3. Si le traitement comportemental est<br />
inefficace :<br />
a. Expliquer à la femme enceinte (et<br />
parfois à son conjoint ou partenaire) les<br />
risques et les bénéfices d’un TSN,<br />
b. Encourager la décision d’arrêter de<br />
fumer avec un TSN. Le TSN doit être en<br />
revanche associé à une thérapie<br />
comportementale.<br />
Cette recommandation a pour objectif de<br />
permettre l’usage des TSN chez la femme<br />
enceinte.<br />
20
Le cas <strong>du</strong> Snus<br />
Conclusion 13<br />
Une substance nocive et addictive<br />
Le caractère nocif et addictif <strong>du</strong> Snus<br />
(snuff oral suédois) n’est plus à démontrer.<br />
Tous les pro<strong>du</strong>its dérivés <strong>du</strong> tabac sont<br />
potentiellement mortels et entraînent des<br />
maladies associées au tabac. Encourager tous<br />
les utilisateurs de tabac à arrêter et les<br />
nouveaux « clients » potentiels à ne pas<br />
commencer est donc une priorité.<br />
En 2004, après un examen approfondi des<br />
données scientifiques publiées, le groupe de<br />
travail des monographies <strong>du</strong> CIRC, Centre<br />
International de Recherche sur le Cancer, a<br />
conclu que le tabac sans fumée était<br />
carcinogène chez les humains. Tous les types<br />
de tabac contiennent différentes quantités<br />
de nicotine et de nitrosamine. Des centaines<br />
de millions d’indivi<strong>du</strong>s sont dépendants au<br />
tabac sans fumée, son utilisation par les<br />
jeunes augmentant dans de nombreux pays.<br />
Le groupe de travail de l’IARC n’a identifié<br />
aucune donnée étayant un lien entre la<br />
faible prévalence <strong>du</strong> tabagisme en Suède et<br />
l’usage de snus humide.<br />
Le tabagisme et la consommation de Snus<br />
augmentent également le risque de diabète<br />
et la mortalité suite à un infarctus <strong>du</strong><br />
myocarde. En outre, on observe une<br />
augmentation <strong>du</strong> risque de spasme<br />
vasculaire, d’angine de poitrine et de<br />
complications post-chirurgicaux.<br />
21<br />
Conclusion 14<br />
Le Snus et les pro<strong>du</strong>its sans fumée<br />
ne sont pas des TSN<br />
Il existe des pro<strong>du</strong>its contenant de la<br />
nicotine propre qui permettent de combler<br />
le besoin en nicotine des fumeurs sous<br />
sevrage tabagique. En tant que<br />
professionnels de santé, les experts ne<br />
veulent en aucun cas encourager les<br />
manufacturiers <strong>du</strong> tabac à développer ce<br />
type de pro<strong>du</strong>its.<br />
En général, lorsque l’on prend des<br />
pro<strong>du</strong>its de substitution nicotinique pendant<br />
un sevrage tabagique, leur utilisation est une<br />
aide pour prévenir les symptomes de<br />
sevrage, aide suivie d’une ré<strong>du</strong>ction<br />
progressive. L’objectif visé est un sevrage<br />
définitif en nicotine (y compris TSN).<br />
S’il est utilisé pour la ré<strong>du</strong>ction ou l’arrêt<br />
<strong>du</strong> tabagisme, une diminution progressive<br />
<strong>du</strong> snus sera peu probable. De plus, des<br />
discussions sur les bénéfices de santé <strong>du</strong> snus<br />
nous rappellent clairement la situation<br />
observée au milieu des années 1970, lorsque<br />
les risques santé des cigarettes « légères »<br />
étaient systématiquement sous-estimés.<br />
Conclusions<br />
Snus.
Session 1<br />
Indications and<br />
Contraindications for<br />
<strong>Nicotine</strong> Replacement<br />
Therapies by<br />
representatives of EU<br />
countries<br />
23
COUNTRY NRT available<br />
AUSTRIA<br />
BELGIUM<br />
BULGARIA<br />
CYPRUS<br />
CZECH<br />
REPUBLIC<br />
DENMARK<br />
ESTONIA<br />
FINLAND<br />
*Gum<br />
*Patch<br />
*Microtab<br />
*Inhaler<br />
*Nasal spray<br />
*Sublingual<br />
*Patch (21/14/7 and 15/10/5 mg)<br />
*Microtab<br />
*Lozenge<br />
*Inhaler<br />
*Gum<br />
*Patch (Nicotinnell) (21/14/7 mg)<br />
*Gum(Nicorette) (2/4 mg)<br />
*Lozenge (1,5 mg)<br />
*Patch<br />
*GUM<br />
Prescription<br />
<strong>du</strong>ration<br />
* Recommended for 3<br />
months (no prescription)<br />
* Long term use (> 3<br />
months) if necessary<br />
* Usually NRTs are used < 3<br />
months<br />
Consumption<br />
re<strong>du</strong>ction<br />
Long term<br />
re<strong>du</strong>ction<br />
may only work<br />
for nicotine<br />
dependant<br />
smokers if NRT<br />
are used<br />
24<br />
Temporary<br />
cessation<br />
Yes<br />
Increasing the dose<br />
and combine<br />
2 NRTs<br />
*Yes<br />
*Motivation for using the<br />
sufficient dose<br />
*2 NRT are useful in smokers<br />
who are trough maintainers<br />
and peak-seekers<br />
> 3 months (6 months) Yes Yes Yes<br />
3 months to 6 months<br />
Not studied Not studied No<br />
Yes<br />
Yes<br />
Yes<br />
A least 1 month<br />
for smokers<br />
who are going<br />
to be operated<br />
or hospitalized<br />
Smoking cessation clinics<br />
prescribe<br />
combined NRT patches<br />
and gum or<br />
NRT + bupropion<br />
Nicorette gum 2 and 4 mg 12 w up to 12 m Yes Yes Not mentioned<br />
Nicorette inhaler 10 mg 12 w up to 12 m Yes Yes Not mentioned<br />
Nicorette invisipatch 25, 15, 10 mg 12 w up to 6 m Not mentioned Not mentioned Not mentioned<br />
Niquitin Clear patch 14, 21 mg (7 mg<br />
not sold)<br />
Niquitin lozenge 2, 4 mg (currently<br />
planning to stop the sale)<br />
*<strong>Nicotine</strong> gum (2/4 mg)<br />
*Patch (16h 15/10/5 mg and 24h<br />
21/14/7 mg)<br />
*Nasal spray<br />
*Inhaler<br />
*Sublingual tablet<br />
*<strong>Nicotine</strong> gum (2/4 mg)<br />
*Patch (16h 15/10/5 mg and 24h<br />
21/14/7 mg)<br />
*Inhaler<br />
*Sublingual tablet<br />
*Lozenge (1 mg)<br />
10 w Not mentioned Not mentioned Not mentioned<br />
12 w Not mentioned Not mentioned Not mentioned<br />
Sufficient <strong>du</strong>ration<br />
of use:<br />
3 to 6 months<br />
*Yes, if no<br />
motivation to<br />
stop<br />
*Encouragement<br />
to stop<br />
by medical<br />
personnel<br />
*Yes, if no motivation<br />
to stop<br />
*Encouragement<br />
to stop<br />
by medical<br />
personnel<br />
*Yes, adequate dose and a<br />
sufficient <strong>du</strong>ration of use<br />
should be tailored<br />
*Combination especially for<br />
those relapsed in<br />
mono<strong>therapy</strong>
NRTs Under 18 Precautions<br />
NRTs in case of<br />
Cardio-Vascular<br />
diseases<br />
NRTs in case of Pregnancy<br />
Yes Yes With caution<br />
Yes Avoid<br />
Pratically no<br />
Only in dependant<br />
adolescents with<br />
behavioral support<br />
Not without physicians<br />
consultation<br />
Not without physicians<br />
consultation<br />
Not without physicians<br />
consultation<br />
No<br />
No<br />
*Well grounded in<br />
smoking cessation<br />
among nicotine<br />
dependant<br />
adolescents<br />
*The best results<br />
can be achieved<br />
if nicotine<br />
<strong>replacement</strong><br />
<strong>therapy</strong> among<br />
adolescents<br />
is connected with<br />
the media<br />
campaigns<br />
*Pregnancy and breast<br />
feeding without the<br />
supervision of gynecologist<br />
*Unstable angina<br />
*Severe arrhythmia<br />
Under precaution and following<br />
a consultation with<br />
cardiologist<br />
To avoid<br />
*After previous failure<br />
of behavioral counseling<br />
*Pro<strong>du</strong>cts on an<br />
intermittent base<br />
*Supervision by the<br />
gynecologist<br />
No applied<br />
treatment<br />
*Try to stop smoking before<br />
conception<br />
*TCC<br />
*Short NRT use if pregnant<br />
woman still smokes<br />
*Prescription<br />
*OTC (no prescription)<br />
*Reimbursement<br />
*OTC<br />
*No reimbursement<br />
*OTC<br />
*No reimbursement<br />
*OTC<br />
*No reimbursement<br />
*OTC (gum,lozenges,<br />
patch)<br />
*No reimbursment,<br />
annual tender for<br />
patches.<br />
Nonsmoker After physicians consultation After physicians consultation OTC, not reimbursed<br />
Nonsmoker After physicians consultation After physicians consultation OTC, not reimbursed<br />
Nonsmoker After physicians consultation After physicians consultation OTC, not reimbursed<br />
Nonsmoker, fresh CV event,<br />
pregnancy, age under 18<br />
Nonsmoker,<br />
phenylketonuria, age<br />
under 18, CV event<br />
within past 4 weeks<br />
*With CHD<br />
*Pregnant and nursing<br />
mothers<br />
*Myocardial infarction<br />
*Unstable angina pectoris<br />
*Arrhythmias<br />
No No OTC, not reimbursed<br />
Not if within past 4 weeks After physicians consultation OTC, not reimbursed<br />
With caution With caution<br />
*OTC<br />
*No reimbursement<br />
*OTC<br />
*Prescription only for<br />
under 18 years old<br />
*No reimbursement<br />
*Available in shops,<br />
kiosks, service stations<br />
25 Session 1 - Presentation of representatives of EU countries<br />
COUNTRY<br />
AUSTRIA<br />
BELGIUM<br />
BULGARIA<br />
CYPRUS<br />
CZECH<br />
REPUBLIC<br />
DENMARK<br />
ESTONIA<br />
FINLAND
COUNTRY NRT available<br />
FRANCE<br />
GERMANY<br />
GREECE<br />
HUNGARY<br />
IRLANDE<br />
ITALY<br />
LETVIA<br />
LITHUANIA<br />
LUXEMBOURG<br />
*Gum (2/4 mg)<br />
*Lozenge (1,5/2,5 mg)<br />
*Inhaler<br />
*Sublingual tablet (2 mg)<br />
*Patch<br />
*<strong>Nicotine</strong> gum (2/4 mg)<br />
*Patch (16h 15/10/5 mg and 24h<br />
21/14/7 mg)<br />
*Nasal spray<br />
*Inhaler<br />
*Sublingual tablet<br />
*Gum (2/4 mg)<br />
*Patch (16/10/5/21/14/7 mg)<br />
*Lozenge (1,5 mg)<br />
*Patch<br />
(24/16 hours)<br />
*Gum (2/4 mg)<br />
*Lozenge<br />
*<strong>Nicotine</strong> gum (2/4 mg)<br />
*Patch (16h 15/10/5 mg and 24h<br />
21/14/7 mg)<br />
*Nasal spray<br />
*Inhaler<br />
*Sublingual tablet<br />
*Patch<br />
*Inhaler<br />
*Lozenge<br />
*Gum<br />
*Nicopatch<br />
*Nicopass<br />
*Nicotablet<br />
*Nicorette<br />
Prescription<br />
<strong>du</strong>ration<br />
12 months<br />
12 months<br />
12 months<br />
3 months<br />
3 months<br />
Recommended<br />
for 3 months<br />
Consumption<br />
re<strong>du</strong>ction<br />
Yes<br />
Yes<br />
Yes<br />
Yes<br />
No<br />
*Inability to stop smoking<br />
*Mean mental disorder<br />
*Unwilling to quit<br />
Temporary<br />
cessation<br />
Yes<br />
Yes<br />
Yes<br />
Yes<br />
No<br />
A least 1 month for smokers<br />
who are going to be<br />
operated<br />
or hospitalized<br />
Increasing the<br />
dose<br />
and combine<br />
2 NRTs<br />
Yes / No<br />
Yes / No<br />
Yes<br />
No<br />
Yes (not for all)<br />
Smoking cessation<br />
clinics prescribe<br />
combined NRT<br />
patches and gum or<br />
NRT + bupropion<br />
No Yes Yes<br />
3 months Only for inhaler Yes No<br />
1 to 3<br />
months<br />
Sometimes No No<br />
26
NRTs<br />
Under 18<br />
Yes for pro<strong>du</strong>ctsregistered<br />
in a national<br />
proce<strong>du</strong>re<br />
Only in<br />
dependant<br />
adolescents<br />
with<br />
behavioral<br />
support<br />
Officially<br />
contraindicated<br />
but in<br />
practice<br />
it is allowed<br />
No<br />
Yes<br />
Precautions<br />
*Pregnancy and breast feeding<br />
without the supervision<br />
of gynecologist<br />
*Unstable angina<br />
*Severe arrhythmia<br />
*Active gastric ulcer<br />
*Dental prothesis<br />
*Generalized skin disease<br />
*Peptic ulcer<br />
*Dermatitis<br />
*Overdosing<br />
*Under 18<br />
*Cardiovascular diseases<br />
*Pregnancy<br />
NRTs in case of<br />
Cardio-Vascular<br />
diseases<br />
NRTs in case of Pregnancy<br />
Yes Yes<br />
NRT recommended for<br />
CHD<br />
patients who are smokers<br />
Contraindicated in recent<br />
heart infraction, clinically<br />
relevant arrhythmias,<br />
unstable anginer pectoris<br />
Contraindicated<br />
in acute situations<br />
27<br />
*Try to stop smoking before<br />
conception<br />
*TCC<br />
*Short NRT use if pregnant<br />
woman still smokes<br />
Officially contraindicated<br />
but it is allowed if the<br />
patient is unable to stop<br />
on his own<br />
Contraindicated<br />
Yes Yes<br />
*Prescription<br />
*OTC (no prescription)<br />
*Reimbursement<br />
Reimbursement<br />
50 euros fixed price<br />
* Gum: OTC for a single<br />
dose of 10mg and a<br />
maximum daily<br />
dose of 64mg<br />
* Inhaler: maximum<br />
strenght 10mg maximum<br />
daily dose of 64mg<br />
*OTC (gum, patch)<br />
*Prescription<br />
(nasal spray, oral inhaler)<br />
*From 2009 probably<br />
reimbursement<br />
*OTC<br />
*No reimbursement<br />
* Nasal Spray Prescription<br />
* OTC for other pro<strong>du</strong>cts<br />
*OTC<br />
*No reimbursement<br />
(in April 2008 a law has<br />
been approved<br />
for granting reimbursement<br />
for<br />
cessation but, so far, it is<br />
not enforced)<br />
*OTC<br />
100 euros after 8 months<br />
Session 1 - Presentation of representatives of EU countries<br />
COUNTRY<br />
FRANCE<br />
GERMANY<br />
GREECE<br />
HUNGARY<br />
IRLANDE<br />
ITALY<br />
LETVIA<br />
LITHUANIA<br />
LUXEMBOURG
COUNTRY NRT available<br />
MALTA<br />
POLAND<br />
PORTUGAL<br />
ROMANIA<br />
SLOVAKIA<br />
SLOVENIA<br />
SPAIN<br />
SWEDEN<br />
SWITZERLAND<br />
THE<br />
NETHERLANDS<br />
UNITED<br />
KINGDOM<br />
*Gum<br />
*Oral inhaler<br />
*Patch<br />
*Nasal spray<br />
*Sublingual tablets<br />
*Gum<br />
(2/4 mg)<br />
*Patch (15h/16mg)<br />
*Gum (2/ 4 mg)<br />
*Patch (5/10/15 mg 24h<br />
and 7/14/21 mg 24h)<br />
*Tablets (1 mg)<br />
*<strong>Nicotine</strong> gum (2/4 mg)<br />
*Patch (16h 15/10/5 mg<br />
and 24h 21/14/7 mg)<br />
*Nasal spray<br />
*Inhaler<br />
*Sublingual tablet<br />
*Gum<br />
*Oral inhaler<br />
*Patch<br />
*Sublingual<br />
*Patch (16/24h)<br />
*Gum (2/4 mg)<br />
*Sublingual tablet<br />
*Lozenge<br />
*Gum (2/4mg)<br />
*Nasal spray<br />
*Oral inhaler<br />
*Patch (16/24h)<br />
*Sublingual<br />
*Lozenge<br />
Prescription<br />
<strong>du</strong>ration<br />
3 months<br />
Usually, people do not<br />
use NRT for so long<br />
2 months<br />
Consumption<br />
re<strong>du</strong>ction<br />
Temporary<br />
cessation<br />
Increasing the<br />
dose<br />
and combine<br />
2 NRTs<br />
No Yes Yes<br />
Promoted by the<br />
pro<strong>du</strong>cer of the NRT<br />
or Not promoted<br />
NRT is not recommended<br />
in temporary cessation<br />
but it is practiced<br />
Maximum 6 months Yes No<br />
3 months Yes Yes<br />
*Gum 4mg : 4 to 6 weeks<br />
then 2 mg up to 1 year<br />
*Patch: max 3 month<br />
*Tablet : decrease dose<br />
after 2/3 months<br />
*Lozenge : decrease dose<br />
after 3 months<br />
General physicians can<br />
only prescribe for 2<br />
weeks and continue if the<br />
smoker stops<br />
But physicians can<br />
in practice prescribe<br />
for longer<br />
Nicotirette is registered for<br />
consumption re<strong>du</strong>ction<br />
Treatment guideline does<br />
not (yet) recommend<br />
Yes<br />
(licensed for certain<br />
pro<strong>du</strong>cts)<br />
28<br />
Not recommended<br />
in treatment guideline<br />
(yet)<br />
Yes<br />
(licensed for certain pro<strong>du</strong>cts)<br />
Yes<br />
Most health<br />
professionals<br />
do but health<br />
authorities<br />
do not approve<br />
*Official : No<br />
(compendium)<br />
*Guidelines : Yes<br />
(practice)<br />
Not recommended<br />
Indivi<strong>du</strong>al physicians<br />
do so in practice<br />
Recommended<br />
in a recent<br />
guidance as<br />
possibly beneficial
NRTs Under 18 Precautions<br />
NRTs in case of<br />
Cardio-Vascular<br />
diseases<br />
NRTs in case of Pregnancy<br />
In general no In general no In general no<br />
No,<br />
but used in<br />
practice<br />
No<br />
*Official : No<br />
*Practice : Yes<br />
*Pregnancy (for patches)<br />
*Under 18<br />
*Dermatosis<br />
*Other local problems<br />
*Skin problems<br />
*Denture problems<br />
*Cardio-vascular problems<br />
*Gastric problems<br />
*Official :<br />
No combination<br />
No longer than 3 months<br />
*Practice : Combination<br />
More than 3 months<br />
* This use is not<br />
safe<br />
* Contra-indicated<br />
in inserts,<br />
Hypertension, feochromocytom,<br />
research will be<br />
angina pectoris, cerebro-vascular<br />
con<strong>du</strong>cted in<br />
insufficiency, vascular and heart<br />
2009/2010 on<br />
disturbances,hyperthyroid, dia-<br />
effectivitiy of<br />
betes, liver/kidney insufficiency<br />
patches for<br />
asthma, chronic throat, age 65 years, irritation of skin<br />
* Youth are not<br />
interested in<br />
quitting with<br />
help<br />
Can be prescribed<br />
(physician<br />
makes decision)<br />
Not absolutely<br />
contraindicated<br />
As listed in the<br />
British National Formulary<br />
Yes<br />
Precaution with<br />
the use of patches<br />
With caution No<br />
*Official : No<br />
*Practice : Yes<br />
*Can be used<br />
(level 3 evidence)<br />
*If seems saver than<br />
smoking<br />
*A physician must be<br />
involved<br />
Not a contra-indication<br />
Caution urged with unstable<br />
vascular condition<br />
29<br />
No<br />
*Less harmful than smoking,<br />
but still risk full NRT when<br />
other treatment failed or<br />
when previous<br />
pregnancy failed<br />
do to smoking<br />
*A physician must be involved<br />
(gynecologist)<br />
A caution, rather than<br />
contra-indication<br />
Use is permitted as long as<br />
woman discuss this with an<br />
health professional<br />
*Prescription<br />
*OTC (no prescription)<br />
*Reimbursement<br />
*OTC (gum)<br />
*Prescription<br />
(nasal spray, oral inhaler,<br />
patch, sublingual)<br />
*No reimbursement<br />
*OTC<br />
*Reimbursement (only<br />
patches)<br />
*OTC<br />
*Reimbursement depend<br />
on province/community<br />
* Nasal Spray Prescription<br />
* OTC for other pro<strong>du</strong>cts<br />
*OTC<br />
(gum, sublingual, patch)<br />
*Prescription (oral inhaler)<br />
*No reimbursement<br />
*OTC<br />
*No reimbursement yet<br />
* Possible in 2010 for a 12<br />
week treatment<br />
*OTC<br />
*Hyper and supermarkets<br />
*Prescription costs E7 (E8-<br />
9) but free in pregnancy,<br />
certain medical problems,<br />
elderly and young a<strong>du</strong>lts,<br />
poor people-<br />
The cost of providing a<br />
prescription to the general<br />
physician is nothing<br />
Session 1 - Presentation of representatives of EU countries<br />
COUNTRY<br />
MALTA<br />
POLAND<br />
PORTUGAL<br />
ROMANIA<br />
SLOVAKIA<br />
SLOVENIA<br />
SPAIN<br />
SWEDEN<br />
SWITZERLAND<br />
THE<br />
NETHERLANDS<br />
UNITED<br />
KINGDOM
Session 2<br />
NRTs in subjects under<br />
the age of 18, in case<br />
of pregnancy or<br />
cardiovascular diseases<br />
31
References<br />
(1) Bergstrom HC,<br />
McDonald CG, French<br />
HT, Smith RF.<br />
Continuous nicotine<br />
administration pro<strong>du</strong>ces<br />
selective, agedependent<br />
structural<br />
alteration of pyramidal<br />
neurons from prelimbic<br />
cortex. Synapse 2008;<br />
62(1): 31-39.<br />
(2) Debry SC, Tiffany ST.<br />
Tobacco-in<strong>du</strong>ced neurotoxicity<br />
of adolescent<br />
cognitive development<br />
(TINACD): A proposed<br />
model for the development<br />
of impulsivity in<br />
nicotine dependence.<br />
<strong>Nicotine</strong> Tob Res 2008;<br />
10(1): 11-25.<br />
(3) Wessels C, Winterer<br />
G. [Effects of nicotine<br />
on neurodevelopment.].<br />
Nervenarzt<br />
2008; 79(1): 7-16.<br />
(4) Johnson JG, Cohen<br />
P, Pine DS, Klein DF,<br />
Kasen S, Brook JS.<br />
Association between<br />
cigarette smoking and<br />
anxiety disorders<br />
<strong>du</strong>ring adolescence and<br />
early a<strong>du</strong>lthood. JAMA<br />
2000; 284(18): 2348-<br />
2351.<br />
(5) DiFranza JR, Rigotti<br />
NA, McNeill AD et al.<br />
Initial symptoms of<br />
nicotine dependence in<br />
adolescents. TobControl<br />
2000; 9(3): 313-319.<br />
(6) Kandel DB, Hu MC,<br />
Griesler PC, Schaffran<br />
C. On the development<br />
of nicotine dependence<br />
in adolescence. Drug<br />
Alcohol Depend 2007;<br />
91(1): 26-39.<br />
(7) Breslau N, Peterson<br />
EL. Smoking cessation<br />
in young a<strong>du</strong>lts: age at<br />
initiation of cigarette<br />
smoking and other suspected<br />
influences. Am J<br />
Public Health 1996;<br />
86(2): 214-220.<br />
Most smokers start smoking <strong>du</strong>ring<br />
adolescence, at an age when the maturation of<br />
the central nervous system is incomplete and<br />
when cholinergic mechanisms play a major role<br />
in the regulation of its development.<br />
<strong>Nicotine</strong> and developing<br />
brain<br />
Use of NRTs among<br />
adolescents<br />
Jean-Pierre Zellweger<br />
Pneumologist<br />
Fribourg, Switzerland<br />
Disturbance of the maturation processes can<br />
lead to permanent impairment of the neuronal<br />
architecture (1) or suboptimal function of some<br />
parts of the system. Given its neurotropic effect<br />
and the high density of nicotinic receptors in<br />
the central nervous system, nicotine has a<br />
major impact on cerebral development in<br />
adolescents (2). It has thus been demonstrated<br />
that nicotine interacts with the normal<br />
maturation processes of the cholinergic system<br />
and that smoking in adolescents can in<strong>du</strong>ce<br />
impairment of the mechanisms of impulsivity<br />
control, similar to the impairments that<br />
characterize attention deficit hyperactivity<br />
disorder (ADHD) (3). Some adolescent smokers<br />
also develop an anxiety disorder (4).<br />
See figures 1 and 2.<br />
Tobacco dependence can develop rapidly in<br />
some adolescents, occasionally after only a few<br />
weeks of use (5), and this is probably under the<br />
influence of genetic and environmental factors<br />
(6).<br />
INTERACTIONS BETWEEN NICOTINE AND THE DEVELOPING BRAIN<br />
Figure 1. The effect of nicotine on neuronal development<br />
deBry SC, Nic Tob Res 2008; 10(1): 11-25.<br />
32
Figure 2. Flowchart depicting the assumptions connecting research findings - deBry SC, Nic Tob Res<br />
2008; 10(1): 11-25.<br />
DEVELOPMENT OF NICOTINE DEPENDENCE<br />
(PROSPECTIVE STUDY AMONG 535 SMOKING ADOLESCENTS)<br />
Figure 3. Cumulative Distribution Function of the Onset of Each DSM-IV Criterion of <strong>Nicotine</strong><br />
Dependence After First Tobacco Use<br />
Kandel DB, Drug and Alcohol Dependence 2007; 91: 26-39.<br />
33 Use of NRTs among adolescents - Jean-Pierre Zellweger<br />
(8) Smith TA, House RF,<br />
Jr., Croghan IT et al.<br />
<strong>Nicotine</strong> patch <strong>therapy</strong><br />
in adolescent<br />
smokers.Pediatrics<br />
1996; 98(4 Pt 1): 659-<br />
667.<br />
(9) Hurt RD, et al<br />
<strong>Nicotine</strong> patch <strong>therapy</strong><br />
in 101 adolescent smokers:<br />
efficacy, withdrawal<br />
symptom relief,<br />
and carbon monoxide<br />
and plasma cotinine<br />
levels. Arch Pediatr<br />
Adolesc Med 2000;<br />
154(1): 31-37.<br />
(10) Hanson K, Allen S,<br />
Jensen S, Hatsukami D.<br />
Treatment of adolescent<br />
smokers with the<br />
nicotine patch. <strong>Nicotine</strong><br />
Tob Res 2003; 5(4): 515-<br />
526.<br />
(11) Moolchan ET,<br />
Robinson ML, Ernst M<br />
et al. Safety and efficacy<br />
of the nicotine<br />
patch and gum for the<br />
treatment of adolescent<br />
tobacco addiction.<br />
Pediatrics 2005; 115(4):<br />
e407-e414.<br />
(12) Roddy E, Romilly N,<br />
Challenger A, Lewis S,<br />
Britton J. Use of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong><br />
in socioeconomically<br />
deprived young<br />
smokers: a communitybased<br />
pilot randomised<br />
controlled trial. Tob<br />
Control 2006; 15(5):<br />
373-376.<br />
(13) Tsuji M, Kanetaka<br />
K, Harada H et al.<br />
[Factors associated with<br />
successful smoking cessation<br />
among adolescent<br />
smokers undergoing<br />
a smoking cessation<br />
program involving<br />
nicotine <strong>replacement</strong><br />
<strong>therapy</strong>]. Nippon Koshu<br />
Eisei Zasshi 2007; 54(5):<br />
304-313.
(14) Price JH, Jordan TR,<br />
Dake JA. Pediatricians'<br />
use of the 5 A's and<br />
nicotine <strong>replacement</strong><br />
<strong>therapy</strong> with adolescent<br />
smokers.<br />
Community Health<br />
2007; 32(2): 85-101.<br />
(15) Klesges LM,<br />
Johnson KC, et al. Use<br />
of nicotine <strong>replacement</strong><br />
<strong>therapy</strong> in adolescent<br />
smokers and nonsmokers.<br />
Arch Pediatr<br />
Adolesc Med 2003;<br />
157(6): 517-522.<br />
(16) Johnson KC,<br />
Klesges LM, Somes GW,<br />
Coday MC, DeBon M.<br />
Access of over-thecounter<br />
nicotine <strong>replacement</strong><br />
<strong>therapy</strong> pro<strong>du</strong>cts<br />
to minors. Arch<br />
Pediatr Adolesc Med<br />
2004; 158(3): 212-216.<br />
(17) Prokhorov AV,<br />
Winickoff JP, Ahluwalia<br />
JS et al. Youth tobacco<br />
use: a global perspective<br />
for child health<br />
care clinicians.<br />
Pediatrics 2006; 118(3):<br />
e890-e903.<br />
(18) DiFranza JR,<br />
Savageau JA, Fletcher K<br />
et al. Symptoms of<br />
tobacco dependence<br />
after brief intermittent<br />
use: the Development<br />
and Assessment of<br />
<strong>Nicotine</strong> Dependence in<br />
Youth-2 study. Arch<br />
Pediatr Adolesc Med<br />
2007; 161(7): 704-710.<br />
(19) Karp I, O'Loughlin<br />
J, Hanley J, Tyndale RF,<br />
Paradis G. Risk factors<br />
for tobacco dependence<br />
in adolescent<br />
smokers. Tob Control<br />
2006; 15(3): 199-204.<br />
(20) Bruvold WH. A<br />
meta-analysis of adolescent<br />
smoking prevention<br />
programs. Am J<br />
Public Health 1993;<br />
83(6): 872-880.<br />
Management<br />
of adolescent<br />
smokers<br />
The clinical management of adolescent<br />
smokers poses a basic problem: the toxic effect<br />
of the nicotine from cigarettes seems more<br />
marked than in a<strong>du</strong>lts, in whom maturation of<br />
the nervous system is complete. Furthermore,<br />
the younger subjects start smoking, the<br />
slimmer their chances of successfully quitting<br />
seem to be (7). Furthermore the use of<br />
nicotine <strong>replacement</strong> <strong>therapy</strong> to treat<br />
dependence involves using a substance that is<br />
potentially harmful in this age-group.<br />
Moreover, very few studies have been<br />
con<strong>du</strong>cted on the efficacy of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> and their results are<br />
rather contradictory.<br />
One of the first studies monitored a group<br />
of 22 adolescents aged between 13 and 17<br />
years for 6 months. They smoked 20 cig/d or<br />
more and were treated with nicotine patches.<br />
Nineteen completed the study but only 3<br />
(14%) were abstinent after 6 months. The<br />
adverse effects were minor (8).<br />
In an open-label study con<strong>du</strong>cted in the<br />
year 2000 in a group of 101 adolescents<br />
smoking 10 cigarettes/day or more, and<br />
treated with nicotine patches, Hurt observed a<br />
6-month abstinence rate of 5% (9).<br />
A randomized study (nicotine patch vs.<br />
placebo) con<strong>du</strong>cted in 100 adolescent smokers<br />
showed no difference between the two groups<br />
in the 10-week abstinence rate, but the mean<br />
<strong>du</strong>ration of abstinence was longer in the active<br />
group (18 days) than in the placebo group (4<br />
days). The adverse effects were minor and<br />
were identical in both groups (10).<br />
Another randomized study on a group of<br />
adolescent smokers treated with nicotine<br />
patches, nicotine gum or placebo for 12 weeks<br />
showed a clear advantage in the 3-month<br />
abstinence rate for the active group (18% for<br />
the patch, 6.5% for gum and 2.5% for<br />
placebo). Here again, the adverse effects were<br />
minor and identical in all the groups (11).<br />
In a group of 98 adolescent smokers living<br />
in an deprived area of Nottingham (UK) and<br />
treated with nicotine patches or placebo, 7<br />
participants were abstinent after 4 weeks and<br />
none after 3 months (12).<br />
In contrast, a Japanese study showed that in<br />
a group of 39 adolescent smokers treated with<br />
nicotine patches, 36% were abstinent after 1<br />
month and 25% after 3 months (13).<br />
Pediatricians rarely prescribe nicotine<br />
<strong>replacement</strong> <strong>therapy</strong>. A recent study showed<br />
that only 59% of pediatricians encountering<br />
adolescent smokers ask about their intention<br />
to quit and only 10% regularly prescribe<br />
nicotine <strong>replacement</strong> <strong>therapy</strong> (14).<br />
In contrast, adolescents appear to use<br />
nicotine <strong>replacement</strong> <strong>therapy</strong> spontaneously,<br />
and this is not only true for smokers (5% to<br />
16% depending on their cigarette<br />
consumption) but also for non-smokers (1.8%)<br />
(15), which suggests that some adolescents use<br />
nicotine <strong>replacement</strong> pro<strong>du</strong>cts for their<br />
neurotropic properties.<br />
According to current regulations in the<br />
United States, adolescents are not permitted to<br />
procure nicotine <strong>replacement</strong> <strong>therapy</strong> over the<br />
counter. In practice, these pro<strong>du</strong>cts are easily<br />
accessible and over 80% of adolescents can<br />
obtain them without difficulty (16).<br />
J.A. Costa e Silva.<br />
34
Discussion<br />
Smoking is a serious problem in adolescents<br />
(17), and the earlier they start, the faster<br />
dependence is established, and greater is the<br />
problem (18), (19).<br />
Prevention programs are relatively<br />
ineffective (20), (21) and the transtheoretical<br />
model of change has not been shown to apply<br />
in this age-group (22), probably <strong>du</strong>e to the fact<br />
that nicotine dependence is multifactorial (23).<br />
In this context, the use of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> as an aid to smoking<br />
cessation seems a good idea and is well<br />
accepted by the majority of adolescents (24),<br />
but the results of the studies that have been<br />
published to date are not encouraging (25).<br />
It is noteworthy that all of the studies (apart<br />
from one (11)) used nicotine patches and no<br />
prospective or randomized studies have been<br />
con<strong>du</strong>cted with other forms of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong>.<br />
The neuronal toxicity of nicotine is a genuine<br />
concern (26), but in any case smoking tobacco<br />
is more toxic than using nicotine <strong>replacement</strong><br />
<strong>therapy</strong>.<br />
Writing of recommendations.<br />
35<br />
Moreover none of the studies have<br />
reported major adverse effects or any<br />
difference between the adverse effects<br />
associated with nicotine <strong>replacement</strong> <strong>therapy</strong><br />
and placebo.<br />
There is therefore no need to worry about<br />
using nicotine <strong>replacement</strong> pro<strong>du</strong>cts in this<br />
age-group but, given their low efficacy in<br />
smoking cessation, they probably ought to be<br />
restricted to cases of strong dependence and<br />
supervised closely (25). Prospective studies of<br />
the efficacy of other forms of nicotine<br />
<strong>replacement</strong> are urgently required (27).<br />
Conclusions:<br />
• <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> is well<br />
tolerated by adolescents.<br />
• <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> is not a<br />
very effective aid to smoking cessation.<br />
• The possible reasons are:<br />
- Inappropriate use (used for a too<br />
short time, at insufficient doses),<br />
- Inadequate delivery system (patches<br />
are too slow-acting),<br />
- Inadequate indications (in smokers<br />
with no intention of quitting),<br />
- Poor evaluation of the degree of<br />
nicotine dependence.<br />
• When the indications are satisfied and<br />
close supervision provided, nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> could be used as an aid to<br />
smoking cessation in adolescents.<br />
• Studies on the use of other forms of<br />
nicotine <strong>replacement</strong> <strong>therapy</strong> besides patches<br />
are needed. ■<br />
Use of NRTs among adolescents - Jean-Pierre Zellweger<br />
(21) Myers MG, et al.<br />
Measuring adolescent<br />
smoking cessation strategies:<br />
instrument<br />
development and initial<br />
validation. <strong>Nicotine</strong> Tob<br />
Res 2007; 9(11): 1131-<br />
1138.<br />
(22) Kleinjan M, et al.<br />
Associations between<br />
the transtheoretical<br />
processes of change,<br />
nicotine dependence<br />
and adolescent smokers'<br />
transition through<br />
the stages of change.<br />
Addiction 2008; 103(2):<br />
331-338.<br />
(23) Kleinjan M, et al.<br />
Factorial and convergent<br />
validity of nicotine<br />
dependence measures<br />
in adolescents:<br />
toward a multidimensional<br />
approach.<br />
<strong>Nicotine</strong> Tob Res 2007;<br />
9(11): 1109-1118.<br />
(24) Leatherdale ST,<br />
McDonald PW. Youth<br />
smokers' beliefs about<br />
different cessation<br />
approaches: are we<br />
providing cessation<br />
interventions they<br />
never intend to use?<br />
Cancer Causes Control<br />
2007; 18(7): 783-791.<br />
(25) Adelman WP.<br />
<strong>Nicotine</strong> <strong>replacement</strong><br />
<strong>therapy</strong> for teenagers:<br />
about time or a waste<br />
of time? Arch Pediatr<br />
Adolesc Med 2004;<br />
158(3): 205-206.<br />
(26) Ginzel KH, Maritz<br />
GS, Marks DF et al.<br />
Critical review: nicotine<br />
for the fetus, the infant<br />
and the adolescent? J<br />
Health Psychol 2007;<br />
12(2): 215-224.<br />
(27) Moolchan ET, Ernst<br />
M, Henningfield JE. A<br />
review of tobacco smoking<br />
in adolescents:<br />
treatment implications.<br />
J Am Acad Child<br />
Adolesc Psychiatry<br />
2000; 39(6): 682-693.
References<br />
(1) US Department of<br />
Health and Human<br />
Services. Women and<br />
smoking: a report of the<br />
Surgeon General. 2001.<br />
Rockille, USDHHS.<br />
(2) Rogers John M.<br />
Tobacco and Pregnancy:<br />
Overview of Exposures<br />
and Effectes. Birth<br />
Defects Research Part C<br />
2008; 84(1): 1-16.<br />
(3) Charlton A. Children<br />
and smoking: the family<br />
circle. British Medical<br />
Bulletin 1996; 52: 90-107.<br />
(4) Wilens TE, Dodson W,<br />
Wilens TE, Dodson W. A<br />
clinical perspective of<br />
attentiondeficit/hyperactivity<br />
disorder into a<strong>du</strong>lthood.<br />
Journal of Clinical<br />
Psychiatry 2004; 65(10):<br />
1301-1313.<br />
(5) Joyce A.Martin, et al.<br />
Births: Final Data for<br />
2004. 2006. US<br />
Department of Health<br />
and Human Services,<br />
Center for Disease<br />
Control and Prevention,<br />
National Centre for<br />
Health Statistics,<br />
National Vital Statistics<br />
System. National Vital<br />
Statistics Reports.<br />
(6) Cnattingius S. The<br />
epidemiology of<br />
smoking <strong>du</strong>ring<br />
pregnancy: smoking<br />
prevalence, maternal<br />
characteristics, and<br />
pregnancy outcomes.<br />
[Review] [154 refs].<br />
<strong>Nicotine</strong> & Tobacco<br />
Research 2004; 6 Suppl<br />
2: S125-S140.<br />
Maternal<br />
Smoking in<br />
Pregnancy<br />
Recommendations<br />
<strong>du</strong>ring pregnancy<br />
Tim Coleman<br />
Division of Primary Care, University of Nottingham.<br />
Medical School, Queen’s Medical Centre, Nottingham, UK.<br />
Maternal smoking <strong>du</strong>ring pregnancy is a<br />
well established risk factor for multiple health<br />
problems (1) and dose-response relationships<br />
have been demonstrated between this and<br />
the following health problems in infants:<br />
being small for gestational age, stillbirth, preterm<br />
birth, sudden infant death syndrome,<br />
obesity and Type II diabetes (2). Infants of<br />
mothers who smoke whilst pregnant are also<br />
at increased risk of developing asthma (3),<br />
childhood learning problems and attentiondeficit,<br />
hyperactivity disorder, causing<br />
persistent problems into a<strong>du</strong>lthood (4).<br />
Despite these well documented risks, 10.2% of<br />
US women smoked <strong>du</strong>ring pregnancy in 2004<br />
(5) as did 13% in Sweden in 2000 (6). In the<br />
UK, in 2005 17% of women smoked<br />
throughout their pregnancies (7) and around<br />
30% smoked for at least some of their<br />
gestational period (8). Maternal smoking in<br />
pregnancy, therefore, remains a major public<br />
health problem which warrants serious<br />
attention.<br />
Maternal<br />
attitudes to<br />
smoking in<br />
pregnancy<br />
Although smoking in pregnancy is far too<br />
prevalent, conception is a highly motivating<br />
time for many smokers. Large numbers of<br />
women attempt to stop smoking when they<br />
first become pregnant, with 25% smokers<br />
managing to stop for at least some of their<br />
gestation (8). Unfortunately, around two<br />
thirds of those who do manage to stop for<br />
any significant length of time will re-start<br />
smoking in the post-natal period. 8<br />
Compared with women who do stop<br />
smoking whilst pregnant, those who<br />
continue are younger, less e<strong>du</strong>cated, more<br />
likely to be single and in manual<br />
occupations. Women who smoke in<br />
pregnancy are much less positive about the<br />
benefits of stopping smoking and, for<br />
example, are far less likely to accept that<br />
smoking harms their babies (8).<br />
36<br />
From left to right,<br />
C. Laur,<br />
C. Jimenez-Ruiz,<br />
D. Thomas.
Effective<br />
treatments for<br />
Smoking<br />
Cessation in<br />
pregnancy<br />
A Cochrane review summarised evidence<br />
for the effectiveness of smoking cessation<br />
programmes delivered outside of routine<br />
ante-natal care finding that these re<strong>du</strong>ce<br />
rates of smoking late pregnancy by around<br />
6% (relative risk 0.94, 95% CI 0.93 - 0.95) (9).<br />
Ante natal smoking cessation programmes<br />
also re<strong>du</strong>ced the incidences of low birth<br />
weight and pre-term birth by approximately<br />
20% from baseline levels (9).<br />
Trials included in the review tested varied<br />
behavioural interventions which were<br />
underpinned by different psychological<br />
theories and it is not possible to say which of<br />
programmes’ indivi<strong>du</strong>al behavioural<br />
components were effective. Most trials<br />
employed cognitive/behavioural strategies<br />
to encourage cessation, but two which used<br />
social support and reward approaches<br />
caused bigger re<strong>du</strong>ctions in smoking rates<br />
(approximately 23%). In contrast,<br />
programmes based around the “stages of<br />
change” theory were not effective.<br />
The Cochrane review also pooled data<br />
from three trials which, at that time, had<br />
investigated the impact of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> (NRT) for smoking<br />
cessation in pregnancy and found no<br />
evidence that this was effective (pooled RR<br />
for cessation in later pregnancy 0.94: 95% CI<br />
0.89, 1.00). Given that smoking cessation<br />
programmes delivered alongside their<br />
routine ante-natal care are effective, these<br />
should be offered to all pregnant women<br />
and any. Pharmacological smoking cessation<br />
aids should only be provided in addition to<br />
these.<br />
37<br />
Using medicinal<br />
nicotine in<br />
pregnancy<br />
Although behavioural treatments for<br />
smoking cessation in pregnancy work,<br />
women who use these need to be motivated<br />
enough to set aside significant amounts to<br />
attend treatment and it is not likely that<br />
those smokers who are very negative about<br />
the benefits of stopping smoking will do so.<br />
Consequently, it is important to find other<br />
smoking cessation treatments which are safe<br />
and effective but which are also more likely<br />
to be used by recalcitrant smokers. One such<br />
potential treatment which has been<br />
recommended for use in pregnancy is<br />
nicotine <strong>replacement</strong> <strong>therapy</strong> (NRT) (10).<br />
Over 100 trials of NRT in non-pregnant<br />
subjects have consistently demonstrated<br />
that, irrespective of NRT formulation used,<br />
this is more effective than placebo for<br />
smoking cessation and increases the chances<br />
of a smoker achieving abstinence in any one<br />
quit attempt by around 80% (RR 1.77 [95%<br />
CI 1.66, 1.88]) (11). Additionally, the impact<br />
of NRT appears to be independent of the<br />
amount or intensity of support provided, the<br />
treatment <strong>du</strong>ration or the setting in which<br />
this is offered. If effective, therefore, NRT<br />
could be an acceptable alternative treatment<br />
for pregnant women who cannot or will not<br />
attend for support with smoking cessation.<br />
Although there is very little evidence for<br />
either the effectiveness or safety of NRT<br />
when used for smoking cessation in<br />
pregnancy, many smoking cessation experts<br />
believe that use of NRT in pregnancy is<br />
preferable to smoking (12). They argue that,<br />
although toxic, nicotine is a substance which<br />
pregnant women would receive anyway if<br />
they continued to smoke and that when it is<br />
delivered by NRTs nicotine is not<br />
accompanied by the numerous over known<br />
tobacco smoke toxins. Additionally, it has<br />
also been argued that because, outside of<br />
Recommendations <strong>du</strong>ring pregnancy - Tim Coleman<br />
(7) Bolling K. Infant<br />
Feeding Survey 2005:<br />
Early Results. 2006.<br />
http://www.ic.nhs.uk/pu<br />
bs/breastfeed2005, The<br />
National Health Service<br />
Information Centre for<br />
Health and Social Care.<br />
(8) Owen L, Penn G.<br />
Smoking and pregnancy:<br />
A survey of knowledge<br />
attitudes and behaviour,<br />
1992-1999. 1999.<br />
London, Health<br />
Development Agency.<br />
Ref Type: Report<br />
(9) Lumley J, Oliver SS,<br />
Chamberlain C, Oakley<br />
L. Interventions for<br />
promoting smoking<br />
cessation <strong>du</strong>ring<br />
pregnancy.[update of<br />
Cochrane Database Syst<br />
Rev. 2000; (2): CD001055;<br />
PMID:<br />
10796228].Cochrane<br />
Database of Systematic<br />
Reviews 2004; (4):<br />
CD001055.<br />
(10) Benowitz NL,<br />
Dempsey DA,<br />
Goldenberg RL, Hughes<br />
JR, Dolan-Mullen P,<br />
Ogburn PL et al. The use<br />
of pharmacotherapies<br />
for smoking cessation<br />
<strong>du</strong>ring pregnancy. Tob<br />
Control 2000; 9 Suppl 3:<br />
III91-III94.<br />
(11) Silagy C, Lancaster<br />
T, Stead L, Mant D,<br />
Fowler G. <strong>Nicotine</strong><br />
<strong>replacement</strong> <strong>therapy</strong> for<br />
smoking cessation.[see<br />
comment][update of<br />
Cochrane Database Syst<br />
Rev. 2002;(4):CD000146;<br />
PMID: 12519537].<br />
Cochrane Database of<br />
Systematic Reviews<br />
2004; (3): CD000146.
(12) Benowitz NL,<br />
Dempsey DA,<br />
Goldenberg RL, Hughes<br />
JR, Dolan-Mullen P,<br />
Ogburn PL et al. The use<br />
of pharmacotherapies<br />
for smoking cessation<br />
<strong>du</strong>ring pregnancy. Tob<br />
Control 2000; 9 Suppl 3:<br />
III91-III94.<br />
(13) Oncken CA, et al.<br />
Effects of transdermal<br />
nicotine or smoking on<br />
nicotine concentrations<br />
and maternal-fetal<br />
hemodynamics. Obstet<br />
Gynecol 1997; 90(4 Pt 1):<br />
569-574.<br />
(14) Benowitz NL,<br />
Dempsey DA.<br />
Pharmaco<strong>therapy</strong> for<br />
smoking cessation<br />
<strong>du</strong>ring pregnancy.<br />
<strong>Nicotine</strong> and Tobacco<br />
Research (Supp) 2004; 6:<br />
S189-S202.<br />
(15) Dempsey DA,<br />
Benowitz NL. Risks and<br />
benefits of nicotine to<br />
aid smoking cessation in<br />
pregnancy. Drug Safety<br />
2001; 24(4): 277-322.<br />
(16) Batstra L, Hadders-<br />
Algra M, Neeleman J.<br />
Effect of antenatal<br />
exposure to maternal<br />
smoking on behavioural<br />
problems and academic<br />
achievement in<br />
childhood: prospective<br />
evidence from a Dutch<br />
birth cohort. Early<br />
Human Development<br />
2003; 75(1-2): 21-33.<br />
pregnancy, nicotine <strong>replacement</strong> therapies<br />
deliver lower doses of nicotine than<br />
cigarettes, this is also likely to be the case for<br />
pregnant women. It should be noted that<br />
enthusiasm for the use of nicotine in<br />
pregnancy are base on theoretical rather<br />
than empirical data.<br />
<strong>Nicotine</strong> in<br />
pregnancy:<br />
safety concerns<br />
<strong>Nicotine</strong> is a known toxin and should<br />
never be advocated for pregnant women<br />
who have never smoked and who would not<br />
otherwise be exposed to it. Only nicotineaddicted<br />
smokers should consider using NRT<br />
for smoking cessation in pregnancy and<br />
occasional or light smokers should probably<br />
not use it.<br />
There is no conclusive research which can<br />
help clinicians to decide the level of smoking<br />
in pregnancy above which women would<br />
definitely receive less (or at least no more)<br />
nicotine from NRT than from smoking. The<br />
few, small studies (e.g. Oncken et al (13) )<br />
which have compared nicotine or cotinine<br />
levels generated when pregnant women use<br />
NRT or smoke have not been large enough<br />
to provide definitive data.<br />
Further comparisons of nicotine levels<br />
generated by NRT and smoking <strong>du</strong>ring<br />
pregnancy are required, but in the interim, it<br />
is probably reasonable to only consider using<br />
NRT for pregnant women who smoked 10 or<br />
more cigarettes daily before conceiving.<br />
The impacts of nicotine on the<br />
developing foetus have been reviewed in<br />
detail elsewhere (14), (15) and will only be<br />
summarised here, but the vast majority of<br />
evidence comes form animal studies and<br />
there is little empirical research in humans.<br />
Safety:nicotine vasoconstriction<br />
■ Smoking & nicotine have fetal CVS effects<br />
- Observed after NRT or smoking<br />
- higher dose of nicotine = greater impact<br />
■ Placental blood flow?<br />
- Re<strong>du</strong>ced by smoking, no NRT studies<br />
- Effect on fetal growth?<br />
The working group. Hedwig Boudrez’<br />
presentation.<br />
Animal work has shown that nicotine is a<br />
vasoconstrictor and human work has<br />
confirmed that its administration affects the<br />
cardiovascular systems of pregnant women<br />
and foetuses (14-15). <strong>Nicotine</strong> gum and<br />
patches both cause dose-related increases in<br />
human maternal blood pressure and heart<br />
38
ate and lesser, concomitant effects on foetal<br />
heart rate but larger effects are caused by<br />
smoking cigarettes (14), (15). It has been<br />
suggested that nicotine-in<strong>du</strong>ced vasoconstriction<br />
might affect placental blood<br />
flow and could be responsible for smokingrelated<br />
re<strong>du</strong>ced foetal growth in utero.<br />
<strong>Nicotine</strong> is also a neurotoxin and long term<br />
nicotine exposure to pregnant rats is<br />
associated with adverse changes in infant<br />
rats’ behavioural and cognitive responses<br />
(14), (15).<br />
Safety:neurotoxicity<br />
■ Smoking in pregnancy =<br />
infants’ behavioural problems (ADHD)<br />
- Hypothesis, observational<br />
■ Experimental animal studies<br />
- High dose maternal nicotine infusion =<br />
infant rat behavioural problems<br />
■ No experimental human studies<br />
It has been hypothesised, therefore, that<br />
nicotine may be the constituent of smoking<br />
which causes the behavioural and cognitive<br />
problems observed in infants born to<br />
maternal smokers (4-16). However, some<br />
experts believe that the doses of nicotine<br />
used in these rodent studies were much<br />
higher than was necessary to compare with<br />
the nicotine doses generated by humans use<br />
of NRT and consequently, these studies are<br />
of little relevance to use of NRT in pregnancy<br />
(17). There are currently no experimental<br />
studies investigating the impact of maternal<br />
nicotine exposure in pregnancy or in<br />
subsequent infant cognition behaviour,<br />
however.<br />
Human studies<br />
Currently, there are only 4 humans studies<br />
providing data on the safety of nicotine in<br />
pregnancy. A Danish placebo RCT<br />
randomised 250 women to nicotine or<br />
placebo patches and found that infants born<br />
to women in the group who received<br />
nicotine were heavier than those in the<br />
placebo group (18). The mean difference in<br />
birth weight was small (186g [95% CI 35 to<br />
336g]) and, hence, is not of clinical<br />
significance, but is of theoretical interest<br />
because it does not support the hypothesis<br />
that nicotine is the substance in tobacco<br />
smoke responsible for of foetal growth<br />
restriction. Another RCT randomised 181<br />
women to cognitive behavioural <strong>therapy</strong><br />
alone or with added NRT, but this trial was<br />
stopped early <strong>du</strong>e to a non-significant<br />
doubling of adverse events in the NRT arm<br />
(19). Adverse events included some<br />
premature births at 35-37 weeks gestation<br />
which are of minimal clinical significance.<br />
The final analysis of trial data suggested that<br />
the higher rate of early birth in the nicotine<br />
arm occurred because, by chance, the rate of<br />
previous pre-term birth was higher in<br />
P.V. Pataka.<br />
39 Recommendations <strong>du</strong>ring pregnancy - Tim Coleman<br />
(17) Hussein J, Farkas S,<br />
MacKinnon Y, Ariano RE,<br />
Sitar DS, Hasan SU.<br />
<strong>Nicotine</strong> doseconcentration<br />
relationship and<br />
pregnancy outcomes in<br />
rat: Biologic plausibility<br />
and implications for<br />
future research.<br />
Toxicology & Applied<br />
Pharmacology 2007;<br />
218(1): 01.<br />
(18) Wisborg K,<br />
Henriksen TB, Jespersen<br />
LB, Secher NJ. <strong>Nicotine</strong><br />
patches for pregnant<br />
smokers: a randomized<br />
controlled study.<br />
Obstetrics & Gynecology<br />
2000; 96(6): 967-971.<br />
(19) Pollak KI, Oncken<br />
CA, Lipkus IM, Lyna P,<br />
Swamy GK, Pletsch PK et<br />
al. <strong>Nicotine</strong> <strong>replacement</strong><br />
and behavioral <strong>therapy</strong><br />
for smoking cessation in<br />
pregnancy. American<br />
Journal of Preventive<br />
Medicine 2007; 33(4):<br />
297-305.<br />
(20) Morales-Suarez-<br />
Varela MM, Bille C,<br />
Christensen K, Olsen J.<br />
Smoking habits, nicotine<br />
use, and congenital<br />
malformations.<br />
Obstetrics & Gynecology<br />
2006; 107(1): 51-57.<br />
(21) Tata LJ, Hubbard RB,<br />
Lewis SA, Smith CJP,<br />
Coleman TJ. Maternal<br />
smoking, use of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> in<br />
pregnancy and<br />
congenital<br />
malformations in<br />
offspring: A case-control<br />
study nested within a<br />
pregnancy cohort.<br />
Unpublished work,<br />
submitted for<br />
publication.<br />
(22) Dempsey D, Jacob P,<br />
III, Benowitz NL.<br />
Accelerated metabolism<br />
of nicotine and cotinine<br />
in pregnant smokers.<br />
Journal of Pharmacology<br />
& Experimental<br />
Therapeutics 2002;<br />
301(2): 594-598.
(23) Kapur B, Hackman<br />
R, Selby P, Klein J, Koren<br />
G. Randomized, doubleblind,<br />
placebo-controlled<br />
trial of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> in<br />
pregnancy. Current<br />
Therapeutic Research,<br />
Clinical & Experimental<br />
2001; 62(4): 274-278.<br />
(24) Hegaard HK,<br />
Kjaergaard H, Moller LF,<br />
Wachmann H, Ottesen B.<br />
Multimodal intervention<br />
raises smoking cessation<br />
rate <strong>du</strong>ring pregnancy.<br />
Acta Obstetricia et<br />
Gynecologica<br />
Scandinavica 2003; 82(9):<br />
813-819.<br />
(25) Pollak K, Oncken<br />
CA, Lipkus I, Lyna P,<br />
Swamy G, Pletsch P et al.<br />
Effectiveness of Adding<br />
<strong>Nicotine</strong> Replacement to<br />
Cognitive Behavioral<br />
Therapy for Smoking<br />
Cessation in Pregnant<br />
Smokers: The Baby<br />
Steps Trial. American<br />
Journal of Preventive<br />
Medicine. 2007; 33: 297-<br />
305.<br />
(26) Coleman T,<br />
Thornton J, Britton J,<br />
Lewis S, Watts K,<br />
Coughtrie MW et al.<br />
Protocol for the<br />
smoking, nicotine and<br />
pregnancy (SNAP) trial:<br />
double-blind, placeborandomised,<br />
controlled<br />
trial of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> in<br />
pregnancy. 1186. BMC<br />
Health Services Research<br />
2007; 7:2.<br />
women randomised to group. The nonblinded<br />
trial design could also have resulted<br />
in biased reporting of adverse events<br />
amongst the NRT group and although birth<br />
weight was monitored, no significant<br />
differences between trial arms were noted.<br />
Two observational epidemiological studies<br />
have investigated the relationship between<br />
NRT use in pregnancy and congenital<br />
abnormalities. One analysed data from<br />
almost 77,000 pregnancies within a Danish<br />
birth cohort, finding an association between<br />
reported nicotine use in the first trimester of<br />
pregnancy and subsequent foetal<br />
malformation (OR 1.61; 95% CI 1.01 – 2.58)<br />
(20). A second case control study, however,<br />
analysed data from almost 51,000 live births<br />
and compared pregnant women who had<br />
received prescriptions for NRT with those<br />
who did not but found no association<br />
between receiving NRT on prescription and<br />
foetal abnormality (OR 1.56; 95% CI 0.85 –<br />
2.86) (21). In both studies findings could have<br />
arisen because of unmeasured (and<br />
therefore non-adjusted for) factors causing<br />
confounding and further evidence is<br />
required.<br />
In summary, there is no compelling<br />
evidence that medicinal nicotine use in<br />
pregnancy is safer or more harmful than<br />
smoking and more research is required. The<br />
current expert consensus that using NRT is<br />
probably safer in pregnancy than smoking is<br />
predominantly based on theoretical<br />
considerations (10).<br />
<strong>Nicotine</strong> in pregnancy:<br />
effectiveness for smoking<br />
cessation<br />
Although NRT is of unquestionable<br />
effectiveness when used outside of<br />
pregnancy, pregnant women metabolise<br />
nicotine and cotinine 60% and 140% faster<br />
respectively than non-pregnant smokers<br />
(22).<br />
This means that standard does of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> may not generate<br />
sufficient plasma levels of nicotine in<br />
pregnant women to effectively substitute for<br />
the nicotine that they would have received<br />
by smoking: higher doses may be need in<br />
pregnancy for NRT to be effective.<br />
This could explain why the three trials<br />
meta analysed in the Cochrane review of<br />
smoking cessation interventions in<br />
pregnancy provide no evidence for the<br />
effectiveness of NRT when used for smoking<br />
cessation in pregnancy (9-18-23-24). The<br />
open-label RCT which was stopped <strong>du</strong>e to<br />
increased adverse events, and which is not<br />
included in the review analysis, did, however,<br />
pro<strong>du</strong>ce positive findings (25). This trial had<br />
two primary outcomes: seven day point<br />
prevalence smoking cessation at both 7 and<br />
38 weeks of pregnancy. At 7 weeks, 7 day<br />
point prevalence cessation was significantly<br />
higher in the NRT arm (24% vs. 8%) and at<br />
38 weeks, cessation in the NRT group was<br />
still greater (18% vs. 7%), but no longer<br />
statistically significant at ‘p’ value selected at<br />
the outset of the study (p=0.025 – to allow<br />
for two primary outcomes).<br />
There are currently three ongoing studies<br />
which should pro<strong>du</strong>ce further information of<br />
the safety and effectiveness of NRT in<br />
pregnancy. These include two placebo RCTs;<br />
one is based in Nottingham, England (26) has<br />
currently recruited 50% of its target and the<br />
second based in Paris, France and has<br />
recently started recruiting. A third openlabel<br />
RCT is based in the US and results are<br />
<strong>du</strong>e soon.<br />
Consequently, in the next 5 years there<br />
may be sufficient evidence to make more<br />
definitive statements about the effectiveness<br />
of NRT for smoking cessation in pregnancy,<br />
but currently there is no evidence other than<br />
theoretical, to suppose that it works.<br />
40
Recommendations<br />
for clinical<br />
practice<br />
The evidence base for using of NRT in<br />
pregnancy has not changed substantially<br />
over the past decade and recommendations<br />
made here are very similar to those in<br />
current US and UK guidance.<br />
1- All women who smoke should attempt<br />
to stop smoking prior to conception.<br />
Physicians should provide women with<br />
evidence-based support in their preconception<br />
attempt at achieving cessation.<br />
2- If women fail to stop smoking before<br />
becoming pregnant, they should be<br />
encouraged to stop smoking as early as<br />
possible in pregnancy, using only<br />
behavioural support provided in addition to<br />
(i.e. outside of) routine ante-natal and<br />
medical care.<br />
3- If a pregnant women cannot achieve<br />
smoking cessation <strong>du</strong>ring pregnancy using<br />
behavioural support only, clinicians should<br />
discuss the risks and benefits of using NRT in<br />
pregnancy. Caution needs to be exercised<br />
with women who are light smokers and NRT<br />
should not be suggested as an option for<br />
women who smoke only occasionally.<br />
4- Discussion of NRT must allow women<br />
to make an informed decision about<br />
whether or not to use this. Points which<br />
should be covered are:<br />
• the belief that NRT is safer than<br />
smoking in pregnancy is based on theory<br />
rather than hard evidence,<br />
• although NRT helps non-pregnant<br />
people to stop smoking, it has not been<br />
shown to definitely help pregnant women<br />
with smoking cessation,<br />
• NRT contains one toxin that women<br />
who smoke regularly and heavily (probably ><br />
10 cigs per day before pregnancy) would<br />
probably receive more of by their continued<br />
smoking. However, the cigarette smoke that<br />
they inhale would contain 3000 or more<br />
other toxins too. ■<br />
The working group - Welcome by J. Chevallet.<br />
41 Recommendations <strong>du</strong>ring pregnancy - Tim Coleman
References<br />
(1) Stead LF, Perera R,<br />
Bullen C, Mant D,<br />
Lancaster T. <strong>Nicotine</strong><br />
<strong>replacement</strong> <strong>therapy</strong> for<br />
smoking cessation.<br />
Cochrane Database of<br />
Systematic Reviews 2007,<br />
Issue 4. Art. No.:<br />
CD000146. DOI:<br />
10.1002/14651858.CD0001<br />
46.pub3.<br />
(2) Hwang SL, Waldhot M.<br />
Heart attacks reported in<br />
patch users still smoking.<br />
Wall Street Journal NY<br />
1992: 14 July: B1.<br />
(3) Ambrose JA, Barua RS.<br />
The pathophy-siology of<br />
cigarette smoking and<br />
cardiovascular disease J<br />
Am Coll Cardiol 2004; 43:<br />
1731-7.<br />
(4) Raupach T, Schäfer K,<br />
Konstantinides S, Andreas<br />
S. Second hand smoking<br />
as a threat for the<br />
cardiovascular sytem: a<br />
change in a paradigm. Eur<br />
Heart J 2006; 27: 386-92.<br />
(5) Ford CL, Zlabek JA.<br />
<strong>Nicotine</strong> <strong>replacement</strong><br />
<strong>therapy</strong> and<br />
cardiovascular disease.<br />
Mayo Clin Proc 2005; 80:<br />
652-6.<br />
(6) Mundal HH, Hjemdahl<br />
P, Gjesdal K. Acute effects<br />
of low dose nicotine gum<br />
on platelet function in<br />
non-smoking<br />
hypertensive and<br />
normotensive men. Eur J<br />
Clin Pharmacol. 1995; 47:<br />
411-6.<br />
(7) Blann AD, Steele C,<br />
McCollum CN. The<br />
influence of smoking and<br />
of oral and transdermal<br />
nicotine on blood<br />
pressure, and<br />
haematology and<br />
coagulation indices.<br />
Thromb Haemost. 1997;<br />
78:1093-6.<br />
(8) Benowitz NL,<br />
Fitzgerald GA, Wilson M<br />
et al. <strong>Nicotine</strong> effects on<br />
eicosanoid formation and<br />
hemostatic function:<br />
comparison of<br />
transdermal nicotine and<br />
cigarette smoking. J Am<br />
Coll Cardiol 1993; 22:<br />
1159-67.<br />
(9) Benowitz NL. Cigarette<br />
smoking and<br />
cardiovascular disease:<br />
Pathophysiology and<br />
implications for<br />
treatment. Progr<br />
Cardiovasc Dis 2003; 46:<br />
91-111.<br />
Cardiovascular<br />
safety of NRTs<br />
Daniel Thomas<br />
Institut de Cardiologie, Groupe Hospitalier Pitié-Salpétrière<br />
Paris - France.<br />
<strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> (NRT) is<br />
an essential tool and its efficacy in<br />
smoking cessation has been fully<br />
demonstrated (1).<br />
NRT has been considered dangerous<br />
from the cardiovascular perspective<br />
following the publication of<br />
cardiovascular events that occurred in<br />
treated subjects (2) and for a long time it<br />
was contraindicated or used with caution<br />
in patients with Coronary Heart Disease,<br />
(CHD).<br />
Nowadays however it is accessible to<br />
everyone because it can be sold over the<br />
counter (OTC).<br />
It is therefore legitimate to make sure it<br />
is safe!<br />
Insofar as NRT only delivers nicotine,<br />
the issues are:<br />
- Can nicotine have cardiovascular<br />
toxicity?<br />
- What are the experimental data<br />
obtained in patients with coronary heart<br />
disease?<br />
- What is the clinical evidence for its<br />
safety, especially in patients with coronary<br />
heart disease?<br />
Can nicotine have<br />
cardiovascular toxicity?<br />
Considering the mechanism of acute<br />
coronary events and the pathophysiology<br />
of smoking in relation to the<br />
cardiovascular system (3-5), nicotine’s<br />
possible points of impact are: thrombosis,<br />
sympathetic stimulation and endothelial<br />
dysfunction.<br />
Prothrombotic effect?<br />
<strong>Nicotine</strong> has no specific impact on<br />
platelet function or the other stages of<br />
coagulation (6-8). <strong>Nicotine</strong> does not<br />
therefore seem to be responsible for the<br />
thrombotic risk of smoking, which appears<br />
to be <strong>du</strong>e to other tobacco combustion<br />
pro<strong>du</strong>cts (9).<br />
Effects on the sympathetic nervous<br />
system?<br />
<strong>Nicotine</strong> activates sympathetic<br />
neurotransmission (10). This sympathetic<br />
activation may increase the heart rate and<br />
blood pressure, thereby increasing<br />
myocardial oxygen consumption (9) which<br />
may contribute to the decompensation of<br />
coronary failure. In fact, these effects have<br />
been observed in smokers but not found<br />
in smokers treated with NRT, even at very<br />
high doses (11). This can be explained:<br />
- firstly by the pharmacokinetics of<br />
nicotine delivered by patch (12),<br />
- secondly by the development of<br />
nicotine tolerance in smokers. This may<br />
42
explain why it increases chemoreflex<br />
sensitivity to hypoxia in a population of<br />
non-smokers (13) while this is not the case<br />
in smokers (14). Similarly, NRT does not<br />
significantly modify the heart rate and<br />
blood pressure of hypertensive smokers<br />
whereas it increases the heart rate and<br />
blood pressure of non-smokers (15).<br />
Finally, by the possibility that these<br />
sympathetic effects are <strong>du</strong>e in part to<br />
other constituents of tobacco smoke<br />
(anabasine, beta-carbolines) (10).<br />
Endothelial dysfunction?<br />
Smoking is an essential cause of<br />
endothelial dysfunction, associated with<br />
the risk of arterial spasm, which may occur<br />
for example in the coronary arteries. The<br />
role of nicotine remains controversial (10).<br />
In smokers, endothelial reactivity is<br />
impaired in a comparable way following<br />
exposure to 1 mg of nicotine absorbed<br />
through smoking a cigarette and after<br />
exposure to an equivalent quantity of<br />
nicotine administered with a nasal spray<br />
(16), this route of administration being<br />
very similar to that of cigarette smoke.<br />
However, in non-smokers endothelial<br />
dysfunction is present on exposure to<br />
tobacco smoke but not with oral<br />
administration of nicotine (10).<br />
Finally, endothelial dysfunction could<br />
be related to other components of<br />
tobacco smoke (10).<br />
Table 1.<br />
Experimental data in<br />
patients with CHD?<br />
One study con<strong>du</strong>cted <strong>du</strong>ring coronary<br />
angiography analyzed the effects of<br />
nicotine gum on heart rate, blood<br />
pressure and coronary artery diameter<br />
<strong>du</strong>ring a cold pressor test in patients with<br />
coronary artery disease (17). NRT does not<br />
potentiate the vasoconstrictive effect of<br />
sympathetic stimulation in<strong>du</strong>ced by the<br />
cold pressor test, in terms of either<br />
haemodynamic changes or arterial<br />
diameter.<br />
One study on 36 smokers with<br />
myocardial ischemia carried out exercise<br />
thallium scintigraphy <strong>du</strong>ring treatment<br />
with 14-mg then 21-mg nicotine patches,<br />
once for each dose (18). Despite a<br />
significant increase in blood nicotine<br />
levels, associated with the fact that the<br />
patients had not stopped smoking<br />
completely, a significant decrease in<br />
myocardial ischemia was observed. None<br />
of the patients exhibited exacerbation of<br />
myocardial ischemia or coronary events<br />
<strong>du</strong>ring NRT. See table 1.<br />
43 Cardiovascular safety of NRTs - Daniel Thomas<br />
(10) Adamopoulos D, Van<br />
de Borne P, Argacha JF.<br />
New insights into the<br />
sympathetic, endothelial<br />
and coronary effects of<br />
nicotine. Clinical and<br />
Experimental<br />
Pharmacology and<br />
Physiology 2008; 35 :458-<br />
63.<br />
(11) Zevin S, Jacob P III,<br />
Benowitz NL. Doserelated<br />
cardiovascular and<br />
endocrine effects of<br />
transdermal nicotine. Clin<br />
Pharmacol Ther 1998; 64:<br />
87-95.<br />
(12) Balfour DK,<br />
Fagerstrom KO.<br />
Pharmacology of nicotine<br />
and its therapeutic use in<br />
smoking cessation and<br />
neurodegenerative<br />
disorders. Pharmacol Ther<br />
1996; 72: 51-81.<br />
(13) Argacha JF, Xhaet O,<br />
Marko G et al. <strong>Nicotine</strong><br />
increases chemoreflex<br />
sensitivity to hypoxia in<br />
non-smokers. Journal of<br />
Hypertension 2008; 26:<br />
284-94.<br />
(14) Najem B, Houssière<br />
A, Pathak A et al. Acute<br />
Cardiovascular and<br />
Sympathetic Effects of<br />
<strong>Nicotine</strong> Replacement<br />
Therapy. Hypertension<br />
2006; 47;1162-7.<br />
(15) Tanus-Santos JE,<br />
Toledo JC, Cittadino M,<br />
Sabha M, Rocha JC,<br />
Moreno H<br />
Jr..Cardiovascular effects<br />
of transdermal nicotine in<br />
mildly hypertensive<br />
smokers. Am J Hypertens.<br />
2001; 14: 610-4.<br />
(16) Neunteufl T, Heher S,<br />
Kostner K et al.<br />
Contribution of <strong>Nicotine</strong><br />
to Acute Endothelial<br />
Dysfunction in Long-Term<br />
Smokers. J Am Coll<br />
Cardiol 2002; 39: 251-6.<br />
(17) Nitenberg A, Antony<br />
I. Effects of nicotine gum<br />
on coronary vasomotor<br />
responses <strong>du</strong>ring<br />
sympathetic stimulation<br />
in patients with coronary<br />
artery stenosis.<br />
Cardiovasc Pharmacol<br />
1999: 34; 694-9.<br />
(18) Mahmarian JJ, Moye<br />
LA, Nasser GA et al.<br />
<strong>Nicotine</strong> patch <strong>therapy</strong> in<br />
smoking cessation<br />
re<strong>du</strong>ces the extent of<br />
exercice in<strong>du</strong>ced<br />
myocardial ischemia. J Am<br />
Coll Cardiol 1997; 30: 125-<br />
30.
(19) Greenland S,<br />
Satterfield MH, Lanes SF.<br />
A meta-analysis to assess<br />
the incidence of adverse<br />
effects associated with<br />
the transdermal nicotine<br />
patch. Drug Saf. 1998; 18:<br />
297-308.<br />
(20) Kimmel SE, Berlin JA,<br />
Miles C, Jaskowiak J,<br />
Carson JL, Strom BL. Risk<br />
of acute first myocardial<br />
infarction and use of<br />
nicotine patches in a<br />
general population. J Am<br />
Coll Cardiol. 2001; 37:<br />
1297-302.<br />
(21) Hubbard et al. Use of<br />
nicotine <strong>replacement</strong><br />
<strong>therapy</strong> and the risk of<br />
acute myocardial<br />
infarction, stroke, and<br />
death. Tob. Control 2005;<br />
14; 416-21.<br />
(22) Murray RP, Bailey WC,<br />
Daniels K et al. Safety of<br />
nicotine polacrilex gum<br />
used by 3094 participants<br />
in the Lung Health Study.<br />
Chest 1996; 109: 438-45.<br />
(23) Working Group for<br />
the Study of transdermal<br />
nicotine in patients with<br />
coronary artery disease.<br />
<strong>Nicotine</strong> <strong>replacement</strong><br />
<strong>therapy</strong> for patients with<br />
coronary artery disease.<br />
Arch Intern Med 1994;<br />
154: 989-95.<br />
(24) Joseph AM, Normann<br />
SM, Ferry LH et al. The<br />
safety of transdermal<br />
nicotine as an aid to<br />
smoking cessation in<br />
patients with cardiac<br />
disease. N Engl J Med<br />
1996; 335: 1792-8.<br />
(25) Tzivoni D, Keren A,<br />
Meyler S, Khoury Z, Lerer<br />
T, Brunel P. Cardiovascular<br />
safety of transdermal<br />
nicotine patchs in<br />
patients with coronary<br />
artery disease who try to<br />
quite smoking. Cardiovasc<br />
Drugs Ther 1998; 12: 239-<br />
44.<br />
(26) Meine TJ, Patel MR,<br />
Washam JB, et al. Safety<br />
and effectiveness of<br />
transdermal nicotine<br />
patch in smokers<br />
admitted with acute<br />
coronary syndromes. Am J<br />
Cardiol 2005; 95:976-78.<br />
Clinical evidence for<br />
safety,<br />
particularly in patients<br />
with CHD<br />
Clinical studies in the general<br />
population<br />
A meta-analysis of 34 controlled,<br />
randomized therapeutic trials of smoking<br />
cessation with NRT showed no excess of<br />
cardiovascular events in subjects receiving<br />
NRT (19).<br />
A case-control study comparing<br />
smokers hospitalized for myocardial<br />
infarction with smokers without<br />
myocardial infarction showed no<br />
correlation between the use of NRT and<br />
the risk of onset of myocardial infarction<br />
(20).<br />
An observational study of 33247<br />
subjects receiving NRT showed no increase<br />
in the risk of myocardial infarction, stroke<br />
or death <strong>du</strong>ring the weeks following<br />
institution of the treatment (21).<br />
An observational study with 5-year<br />
follow-up of 5887 smokers of average age<br />
with obstructive pulmonary disease<br />
showed that the patients treated with NRT<br />
showed no increase in the number of<br />
hospital admissions for cardiovascular<br />
events (22).<br />
All these studies therefore show the<br />
absence de cardiovascular risk associated<br />
with prescribing NRT for smokers not<br />
known to have coronary artery disease.<br />
Studies in patients with coronary<br />
heart disease<br />
A randomized study con<strong>du</strong>cted in 156<br />
patients with stable coronary heart<br />
disease and no acute coronary syndrome<br />
<strong>du</strong>ring the 3 previous months, analyzed<br />
the effect of transdermal administration<br />
of 14 mg and 21 mg of nicotine (23). There<br />
was no difference in symptom progression<br />
between the treated and placebo groups<br />
and Holter recordings showed no<br />
difference in repolarization abnormalities<br />
or arrhythmias.<br />
One randomized study comparing<br />
nicotine patch <strong>therapy</strong> to placebo in 584<br />
cardiac patients, most of whom had stable<br />
coronary heart disease, showed no<br />
significant difference in deaths, coronary<br />
events or hospital admissions for cardiac<br />
problems over a period of 14 weeks (24).<br />
One randomized double blind study<br />
evaluated the cardiovascular effects of<br />
nicotine patches compared to placebo in<br />
patients with coronary heart disease,<br />
using Holter recordings and exercise tests<br />
(25). No modification of heart rate or<br />
blood pressure was observed. The Holter<br />
recordings showed no significant<br />
difference in ischemic episodes or in the<br />
occurrence of arrhythmias between NRT<br />
and placebo. The exercise time and the<br />
time to onset of ischemic signs <strong>du</strong>ring the<br />
exercise test were improved to a similar<br />
extent in both groups.<br />
In summary, <strong>Nicotine</strong> Replacement<br />
Therapy causes no complications in<br />
patients with stable coronary heart<br />
disease.<br />
Studies in patients immediately<br />
after an acute coronary syndrome<br />
No randomized studies have been<br />
con<strong>du</strong>cted in this setting. The only<br />
available study is a case-control study<br />
comparing two groups of 187 smokers<br />
who had been hospitalized for acute<br />
coronary syndrome and were treated or<br />
untreated with transdermal NRT <strong>du</strong>ring<br />
their hospital stay (26). See table 2.<br />
The two groups exhibited no difference<br />
in mortality rates after 7 days, 30 days or 1<br />
year. The number of patients requiring<br />
coronary revascularization was identical.<br />
Despite the lack of scientific evidence<br />
that NRT is completely safe in this<br />
situation, the absolute risk of using NRT is<br />
undoubtedly much lower than the risk of<br />
continuing to smoke.<br />
44
Table 2.<br />
In practice<br />
Based on all these experimental and<br />
clinical findings, what approach should be<br />
adopted regarding the use of NRT in<br />
patients with coronary heart disease?<br />
In France, given the efficacy of NRT in<br />
smoking cessation and the fact that the<br />
experimental and clinical studies available<br />
at the time demonstrated its safety, the<br />
AFSSAPS (French Health Pro<strong>du</strong>cts Safety<br />
Agency) issued the following guidelines in<br />
May 2003 (27-28):<br />
- <strong>Nicotine</strong> <strong>replacement</strong> therapies are<br />
well tolerated by patients with coronary<br />
artery disease and do not exacerbate<br />
coronary heart disease or arrhythmias<br />
(level 2).<br />
- <strong>Nicotine</strong> <strong>replacement</strong> therapies are<br />
recommended in smokers with coronary<br />
artery disease (Grade B).<br />
- <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> can be<br />
prescribed as soon as the patient is<br />
discharged from the intensive care unit<br />
immediately after myocardial infarction<br />
(Grade C).<br />
- However, the prescribing physician<br />
must consider the loss of nicotine<br />
tolerance if the patient has not recently<br />
smoked (consensus agreement).<br />
Early prescription of NRT right from<br />
hospital admission is an important<br />
component of successful cessation after<br />
myocardial infarction. Indeed, studies<br />
show that half of patients who were<br />
smokers at the time of their infarct resume<br />
smoking within six months of the event,<br />
and usually relapse <strong>du</strong>ring the early weeks<br />
(29). Delaying the prescription of NRT<br />
therefore increases the risk of relapse.<br />
Furthermore, patients lose their nicotine<br />
tolerance and may not tolerate NRT so<br />
well.<br />
Prescribing NRT early after a coronary<br />
event therefore appears free of risk and<br />
guarantees better tolerance and better<br />
long-term results.<br />
To summarize<br />
• Media reports of rare clinical cases<br />
of cardiovascular events occurring in<br />
patients treated with nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> (NRT) worried the<br />
population for a long time and led doctors<br />
to be cautious and to avoid prescribing<br />
NRT for cardiovascular patients.<br />
• In fact, the experimental studies<br />
have shown that NRT has no effect on<br />
thrombosis, probably has none on<br />
endothelial function and its potential<br />
sympathomimetic effects are highly<br />
attenuated <strong>du</strong>e to the pharmacokinetics<br />
of NRT and the nicotine tolerance<br />
acquired by smokers.<br />
• Moreover, the clinical studies show<br />
no excess of cardiovascular events with<br />
NRT in either the general population of<br />
smokers or in patients with stable<br />
coronary artery disease.<br />
• Although we have no randomized<br />
studies on the use of NRT immediately<br />
after an acute coronary syndrome, the<br />
absolute risk of using NRT in this situation<br />
is most probably much lower than the risk<br />
of continuing to smoke.<br />
• Taken together, these data have led<br />
to the use of NRT in smokers with<br />
coronary artery disease being<br />
recommended, including immediately<br />
after an acute coronary event such as<br />
myocardial infarction. ■<br />
45 Cardiovascular safety of NRTs - Daniel Thomas<br />
(27) AFSSAPS (Agence<br />
Française de Sécurité<br />
Sanitaire des Pro<strong>du</strong>its de<br />
Santé). Les stratégies<br />
thérapeutiques<br />
médicamenteuses et non<br />
médicamenteuses de<br />
l’aide à l’arrêt <strong>du</strong> tabac.<br />
Recommandations de<br />
bonne pratique.<br />
Mai 2003<br />
(http://afssaps.sante.fr/ht<br />
m/10/tabac/sommaire.ht<br />
m)<br />
(28) B. Le Foll, Melihan-<br />
Cheinin P, Rostoker G,<br />
Lagrue G for the working<br />
group of AFSSAPS.<br />
Smoking cessation<br />
guidelines: evidencebased<br />
recommendations<br />
of the French Health<br />
Pro<strong>du</strong>cts Safety Agency<br />
European Psychiatry 2005;<br />
20: 431-41.<br />
(29) Kotseva K. Wood D,<br />
De Backer G et al.<br />
Cardiovascular prevention<br />
guidelines in daily<br />
practice: a comparison of<br />
EUROASPIRE I, II ans III<br />
surveys in eight European<br />
countries. Lancet 2009;<br />
373: 929-40<br />
29-kotseva 27-<br />
AFSSAPS (Agence<br />
Française de Sécurité<br />
Sanitaire des Pro<strong>du</strong>its de<br />
Santé). Les stratégies<br />
thérapeutiques<br />
médicamenteuses et non<br />
médicamenteuses de<br />
l’aide à l’arrêt <strong>du</strong> tabac.<br />
Recommandations de<br />
bonne pratique. Mai 2003<br />
(http://afssaps.sante.fr/ht<br />
m/10/tabac/sommaire.ht<br />
m) 28-B. Le Foll, Melihan-<br />
Cheinin P, Rostoker G,<br />
Lagrue G for the working<br />
group of AFSSAPS.<br />
Smoking cessation<br />
guidelines: evidencebased<br />
recommendations<br />
of the French Health<br />
Pro<strong>du</strong>cts Safety Agency<br />
European Psychiatry 2005;<br />
20:431-41.<br />
29-Scholte op Reimer W,<br />
de Swart E, De Bacquer D<br />
et al. Smoking behaviour<br />
in European patients with<br />
established coronary<br />
heart disease. Eur Heart J.<br />
2006; 27:35-41.
Session 3<br />
Re<strong>du</strong>ction in<br />
consumption<br />
47
Re<strong>du</strong>cing cigarettes<br />
consumption<br />
Jean Perriot<br />
Dispensaire Emile Roux - Clermont-Ferrand - France.<br />
Re<strong>du</strong>cing cigarettes consumption forms<br />
is part of the concept of harm re<strong>du</strong>ction in<br />
tobacco addiction. What benefit can be<br />
expected from applying this concept in<br />
combination with the use of <strong>Nicotine</strong><br />
Replacement Therapy?<br />
Positioning the<br />
problem<br />
The cigarette is the most common,<br />
toxic and addictive way to use tobacco.<br />
Most of the toxicity associated with<br />
smoking is not <strong>du</strong>e to nicotine (the main<br />
factor in tobacco addiction), but to other<br />
combustion pro<strong>du</strong>cts present in tobacco<br />
smoke (hydrocarbons, irritants, carbon<br />
monoxide) (1, 2).<br />
The disease in<strong>du</strong>ced by smoking is dosedependent<br />
to a great extent, although<br />
there is no threshold effect (3).<br />
Other nicotine administration devices<br />
("Potential Re<strong>du</strong>ced–Exposure Pro<strong>du</strong>cts")<br />
can be used for this purpose alongside<br />
<strong>Nicotine</strong> Replacement Therapy (NRT).<br />
The most attractive pro<strong>du</strong>ct appears to<br />
be "snus"-type oral tobacco, which has<br />
enabled a re<strong>du</strong>ction in tobacco<br />
consumption in Sweden associated with a<br />
low incidence of lung cancer. This pro<strong>du</strong>ct<br />
is not free of risk of disease and<br />
dependence. Recommending its use poses<br />
legal and ethical problems that require<br />
further studies (4).<br />
50% of smokers die prematurely from<br />
the consequences of smoking, although<br />
not all of them want or are able to quit<br />
smoking immediately.<br />
The concept of smoking re<strong>du</strong>ction may<br />
combine a population protection, public<br />
health approach (re<strong>du</strong>cing general toxicity<br />
<strong>du</strong>e to smoking) and an indivi<strong>du</strong>al<br />
approach involving support from<br />
addictions specialists (to prepare for<br />
complete smoking cessation) (5, 6).<br />
Validity of the<br />
concept<br />
Quitting smoking is a difficult<br />
challenge and is marked by many failures.<br />
Although 73.6% of smokers express the<br />
desire to quit smoking, only 22.3% try and<br />
4.1% succeed alone (7). 80% of the best<br />
supported quit attempts fail (8) and the<br />
same proportion of smokers is not ready<br />
to quit in the next 30 days (9).<br />
Smoking cessation remains a priority<br />
but smoking re<strong>du</strong>ction is a legitimate<br />
proposal (3-10) that applies to smokers<br />
failing in their quit attempts, who cannot<br />
or do not want to quit but are ready to<br />
re<strong>du</strong>ce their consumption, who need to<br />
abstain from smoking temporarily.<br />
Leaving aside the possible debate, the<br />
48
current definition adopted for smoking<br />
re<strong>du</strong>ction is (translation) “ a 50% decrease<br />
relative to the subject’s usual<br />
consumption, without compensatory<br />
behavior" (11).<br />
Measuring exhaled CO is the easiest way<br />
of confirming that compensatory<br />
increased smoke inhalation is not being<br />
used; measuring cotinine is the most<br />
specific way.<br />
Two studies on large cohorts have<br />
indicated its value:<br />
• The first included 19,714 Danish men<br />
and women smoking more than 15<br />
cigarettes per day, aged between 20 and<br />
93 years, followed up from 1964 to 1988<br />
(12). They were classified into the six<br />
following groups (Heavy Smokers: HS –<br />
Re<strong>du</strong>cers: R – Light Smokers: LS – Ex-<br />
Smokers: ES – New Smokers: NS). In the<br />
smokers who re<strong>du</strong>ced their consumption<br />
by 50% (R), the risk of lung cancer was<br />
significantly re<strong>du</strong>ced: Adjusted Hazard<br />
Ratio (95% CI) = 0.73 (0.54 – 0.98) versus<br />
HS = 1; LS = 0.44; Q = 0.5; ES = 0.17; NS =<br />
0.0.<br />
I Vadasz.<br />
• The second study (13) monitored<br />
49,496 smokers in Norway from 1970 to<br />
2003 and categorized them into the same<br />
six groups. It demonstrated a nonsignificant<br />
decrease in the risk of lung<br />
cancer (as well as ischemic heart disease<br />
and all the risks of cancers caused by<br />
tobacco) in smokers who had re<strong>du</strong>ced<br />
their smoking by 50% compared to those<br />
who had continued to smoke as before;<br />
this re<strong>du</strong>ced risk was less marked in the<br />
other categories considered.<br />
Figure 1 Age-standardized Incidence Rates of Lung Cancer - Incidence rates are based on the second<br />
estimation in 11151 men and 8563 women from Copenhagen, Denmark in Godtfredsen NS Prescott E,<br />
Osler M. Effect of smoking re<strong>du</strong>ction on lung cancer risk. JAMA 2005; 294 (12); 1505 - 10.<br />
49 Re<strong>du</strong>cing cigarettes consumption - Jean Perriot
Figure 2 - Point<br />
Prevalence<br />
Re<strong>du</strong>ction to<br />
Figure 3 - Point prevalence abstinence at longest follow-up In : Silagy C, Lancaster T, Stead L, Mant D,<br />
Fowler G. <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> for smoking cessation (Cochrane Review). In: The Cochrane<br />
Library, Issue 3, 2004. Chichester, UK: John Wiley & Sons, Ltd.<br />
• A group of 923 subjects smoking at<br />
least 20 cigarettes per day and with no<br />
intention of quitting were classified into 3<br />
groups: NRT (inhaler or 4 mg gum, 15 mg<br />
patch, combination of both), placebo, no<br />
intervention, and received follow-up for 6<br />
months (17). At the end of the study,<br />
smoking re<strong>du</strong>ction and the number of<br />
quit attempts was higher in the group<br />
who had used NRT as an aid than in the<br />
other groups.<br />
• A group of 411 smokers who were<br />
motivated to re<strong>du</strong>ce their consumption<br />
received follow-up for 24 months. They<br />
used 2-mg strength (FTND ≤ 5) or 4-mg<br />
strength (FTND ≥ 6) nicotine gum as<br />
required as an aid, or placebo. Follow-up<br />
involved nine 30-minute visits [18]. After<br />
24 months, 6.3% of the smokers using NRT<br />
had re<strong>du</strong>ced their cigarette consumption<br />
vs. 0.5% in the placebo group, and the 12month<br />
and 24-month cessation rates were<br />
respectively 11.2% and 9.3% in smokers<br />
using NRT vs. 3.9% and 3.4% for those<br />
using placebo.<br />
NRT treatment was perfectly well<br />
tolerated and the re<strong>du</strong>ction in cigarette<br />
51<br />
consumption correlated with that of the<br />
markers of consumption (CO, cotinine).<br />
Finally motivation to quit was increased<br />
among the re<strong>du</strong>cers.<br />
• A cohort of 143 male and female<br />
smokers with a mean FTND of 7, a mean<br />
daily cigarette consumption of 22.6 and<br />
who were ready to re<strong>du</strong>ce their<br />
consumption were assigned, after<br />
e<strong>du</strong>cation in the use of the various forms<br />
of NRT (gum, patches, tablets, spray,<br />
inhalers) for one week to a type of NRT or<br />
can choose their NRT for the next two<br />
weeks; in the last 2 weeks of the study<br />
there was "cross-over" between the 2<br />
groups of NRT methods (14). At the end of<br />
the study, greater effective re<strong>du</strong>ction in<br />
mean consumption (- 54%) was observed<br />
when the smoker could choose the type of<br />
NRT, withdrawal symptoms and cravings<br />
were well controlled, CO readings were<br />
re<strong>du</strong>ced by 35%, and smoking re<strong>du</strong>ction<br />
was perfectly well tolerated. Finally, 93%<br />
of smokers wanted to quit smoking, and<br />
33% of them wanted to do so in the<br />
following months; the rate of abstinence<br />
in<strong>du</strong>ced <strong>du</strong>ring the trial was 5%.<br />
Re<strong>du</strong>cing cigarettes consumption - Jean Perriot
• Other studies have demonstrated the<br />
value of re<strong>du</strong>cing consumption in patients<br />
with COPD ("Lung Health Study") to<br />
enable them to maintain abstinence by<br />
consuming 2-mg gum with 5 years of<br />
follow-up (14% of ex-smokers out of 3,923<br />
patients consumed 10 pieces of gum a<br />
day) or to pro<strong>du</strong>ce long-term smoking<br />
re<strong>du</strong>ction (5% of resi<strong>du</strong>al smokers<br />
consumed 7 pieces of gum a day) (20). In<br />
both cases perfect coronary tolerance was<br />
observed, while re<strong>du</strong>ced breath CO levels<br />
correlated with the decrease in the<br />
number of cigarettes consumed. During<br />
the follow-up of this study it was observed<br />
that repeated quit attempts re<strong>du</strong>ced loss<br />
of lung function, as assessed by FEV1 (21).<br />
An NRT-assisted smoking re<strong>du</strong>ction<br />
strategy in patients with asthma pro<strong>du</strong>ced<br />
slight clinical improvement but above all<br />
increased motivation to quit smoking [22].<br />
In subjects smoking more than 40<br />
cigarettes a day and agreeing to take part<br />
in a re<strong>du</strong>ction strategy with the assistance<br />
of 2-mg strength gum (10/day) for 9 weeks<br />
and to undergo endoscopic investigations<br />
(23) it was shown that smoking re<strong>du</strong>ction<br />
could be obtained in 13 of the 15<br />
volunteers, that is was accompanied by a<br />
44% re<strong>du</strong>ction in mean exhaled CO levels<br />
and that improvements in endoscopic<br />
measures of bronchoalveolar inflammation<br />
(biochemical and cellular) were rapidly<br />
shown.<br />
Fleur Van Bladeren.<br />
Many studies stress its<br />
safety<br />
The observations from the "Lung<br />
Health Study" cited above (20) and those<br />
from the study by Mahmarian et al. (24)<br />
where smokers with coronary artery<br />
disease were given high doses of nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> showed that<br />
ischemia is not exacerbated by NRT (the<br />
degree of ischemia correlated with toxic<br />
carbon monoxide intake). Finally, NRTsupported<br />
smoking re<strong>du</strong>ction is associated<br />
with improvements in indicators of<br />
hemodynamic, metabolic and biometric<br />
risk which, combined with the<br />
improvement in quality of life indicators<br />
(25), suggest that this technique is safe.<br />
Although studies need to be developed<br />
in order to identify all the biomarkers of<br />
harm and their impact on health (26-27)<br />
NRT is currently the effective <strong>therapy</strong> to<br />
help smoking cessation in smoking<br />
re<strong>du</strong>ction strategies that has been best<br />
evaluated and that presents the highest<br />
benefit/risk profile (28-29).<br />
Question on<br />
hold and future<br />
perspectives<br />
Is smoking re<strong>du</strong>ction<br />
using OTC NRT<br />
conceivable?<br />
One study (30) con<strong>du</strong>cted in 223<br />
smokers receiving treatment with 21-mg<br />
patches for 42 days simply with the<br />
support of a self-help manual found a 6month<br />
quit rate of 12% and a quit<br />
attempt rate of 22% (identical rates to those<br />
observed after 6 weeks). Of those smoking<br />
after 6 months, mean daily consumption had<br />
decreased from 28 to 18 cigarettes.<br />
Therefore, smoking re<strong>du</strong>ction supported by<br />
OTC NRT would be possible…<br />
52
However it takes little account of the<br />
undeniable long-term toxicity of smoking,<br />
even if it is re<strong>du</strong>ced, since fluctuations<br />
have been demonstrated in the behavior<br />
of smokers over the period of smoking<br />
re<strong>du</strong>ction (31), similar to the variation in<br />
the decision to quit in pregnant women.<br />
Any factors that promote support from a<br />
healthcare professional <strong>du</strong>ring smoking<br />
re<strong>du</strong>ction <strong>therapy</strong> (validation of the<br />
re<strong>du</strong>ction, developing the motivation to<br />
quit (33) then help quitting through a<br />
combination of NRT and cognitive<br />
behavior <strong>therapy</strong> with the greatest chance<br />
of success (34).<br />
Figure 4 Design of the smoking re<strong>du</strong>ction study.<br />
Weeks 2-3 comprise phase 1 of the study and<br />
weeks 4-5 comprise phase 2. Numbers indicate<br />
completion of each week. In : Fagerström KO,<br />
Tejding R, Westin Ake, Lunell E. Aiding re<strong>du</strong>ction of<br />
smoking with nicotine <strong>replacement</strong> medications :<br />
hope for recal-citrant smoker? Tobacco control<br />
1997; 6: 311-16.<br />
Figure 5 Effect of choice of medication compared<br />
with random allocation to medication on re<strong>du</strong>ction<br />
of cigarettes per day, exhaled carbon monoxide<br />
(CO), and total withdrawal sympton score.In<br />
:Fagerström KO, Tejding R, Westin Ake, Lunell E. Aiding<br />
re<strong>du</strong>ction of smoking with nicotine <strong>replacement</strong><br />
medications: hope for recalcitrant smoker ? Tobacco<br />
control 1997; 6: 311-16.<br />
53<br />
Is NRT-assisted smoking<br />
re<strong>du</strong>ction conceivable in<br />
pregnant women?<br />
Many practitioners already give NRT to<br />
pregnant women in France, even though<br />
it against the recommendations. Although<br />
a toxic effect of nicotine on the fetus<br />
cannot be excluded, carbon monoxide is<br />
mostly responsible for the hypoxia that<br />
has consequences for fetal development<br />
and pregnancy outcome (35).<br />
The results of one study to evaluate the<br />
effect of nicotine patches on the<br />
frequency of smoking cessation, birth<br />
weight and preterm delivery found no<br />
particular toxicity in women who<br />
continued to smoke (36). It seems<br />
probable that in the presence of a stable<br />
nicotine intake, any smoking re<strong>du</strong>ction<br />
that re<strong>du</strong>ces carbon monoxide intake is<br />
much less toxic than continuing with the<br />
same level of cigarette consumption, and<br />
a few studies with a low level of evidence<br />
seem to support this.<br />
Studies need to be con<strong>du</strong>cted to<br />
demonstrate definitively the value and<br />
non-toxicity of this concept in pregnant<br />
women, although they may confront<br />
methodological and ethical problems.<br />
Smoking re<strong>du</strong>ction<br />
supported by NRT in<br />
hard-core smokers<br />
Several epidemiological surveys have<br />
attempted to evaluate the prevalence of<br />
the "hard-core" phenomenon in tobacco<br />
consumers (37-40). According to these<br />
studies, it lies between 5% and 16%.<br />
Hard-core smokers constitute a group<br />
of smokers who are relatively unconvinced<br />
of the toxicity of smoking and of the<br />
dependence it in<strong>du</strong>ces, even though they<br />
exhibit high dependence and are high<br />
consumers, and they are also relatively<br />
unreceptive to messages about prevention<br />
and to restrictions on consumption. Their<br />
Re<strong>du</strong>cing cigarettes consumption - Jean Perriot
P. Crouzit.<br />
motivation to quit is low, they consult<br />
healthcare professionals less than other<br />
categories of smokers, readily consume<br />
other addictive substances and often<br />
exhibit psychopathology (41).<br />
In such patients, NRT-assisted smoking<br />
re<strong>du</strong>ction would be an ideal preparatory<br />
solution for cessation (19-42) and at<br />
worst, if they are to continue smoking, it<br />
would re<strong>du</strong>ce the toxicity of their<br />
cigarette consumption.<br />
C. Laur.<br />
Conclusion<br />
Complete smoking cessation remains a<br />
priority but since most of the toxicity<br />
associated with smoking is not <strong>du</strong>e to<br />
nicotine (the main biological factor<br />
responsible for tobacco dependence) it is<br />
justified to propose smoking re<strong>du</strong>ction<br />
for:<br />
- smokers who have failed in their<br />
quit attempt,<br />
- smokers who cannot or do not<br />
want to quit,<br />
- smokers who do not want to quit<br />
but are willing to re<strong>du</strong>ce their cigarette<br />
consumption,<br />
- finally, smokers who must<br />
temporarily abstain from smoking.<br />
Although the efficacy of such a<br />
concept has been demonstrated in<br />
re<strong>du</strong>cing the number of cigarettes<br />
smoked, increasing the desire to quit, the<br />
number of quit attempts and effective<br />
quitting, re<strong>du</strong>cing the toxicity of smoking<br />
<strong>du</strong>ring the period of smoking re<strong>du</strong>ction<br />
while maintaining the patient’s quality of<br />
life, and finally in facilitating complete<br />
cessation in the future, as has its high<br />
somatic tolerance… the objective of such<br />
interventions remains preparation for<br />
complete smoking cessation; the<br />
in<strong>du</strong>ction of NRT to re<strong>du</strong>ce cigarette<br />
consumption therefore falls under the<br />
scope of prescription and medical<br />
support. ■<br />
J.M. Pibourdin. G. Randaxhe.<br />
54
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JP, Perrot C, et al. <strong>Nicotine</strong><br />
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(18) Wennicke P, Danielsson T,<br />
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(20) Murray RB, Bailey WC,<br />
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used by 3094 participants in the<br />
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109: 438-445.<br />
(21) Murray RP, Anthonisen NR,<br />
Connett JE, Wise RA, et al.<br />
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Group. J Clin Epidemiol 1998; 51:<br />
1317-1326.<br />
(22) Tonnesen P, Pisinger C,<br />
Huidberg S, Vennicke P, et al.<br />
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Tob Res 2005; 7: 139-148.<br />
(23) Rennard S, Daughton D,<br />
Fujita J, Oehlerking MB, et al.<br />
Short term smoking re<strong>du</strong>ction is<br />
associated with re<strong>du</strong>ction in<br />
mesures of lower respiratory<br />
tract inflammation is heavy<br />
smokers. Eur Respir J 1999; 3:<br />
752-759.<br />
(24) Mahmarian JJ, Moye LA,<br />
Nasser GA, Naguel SF et al.<br />
<strong>Nicotine</strong> patch <strong>therapy</strong> in<br />
smoking cessation re<strong>du</strong>ces the<br />
extent of exercise-in<strong>du</strong>ced<br />
myocardial ischemia. J M Coll<br />
Cardiol 1997; 30: 125-130.<br />
(25) Bolliger CT, Zellweger JP,<br />
Danielsson T, Van Biljon X, et al.<br />
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re<strong>du</strong>ction on health risk markers<br />
and quality of life. <strong>Nicotine</strong> Tob<br />
Res 2002; 4: 433-439.<br />
(26) Hurt RD, Groghan GA,<br />
Walter TD, Groghan IT, et al.<br />
Does smoking re<strong>du</strong>ction result in<br />
re<strong>du</strong>ction of biomarkers<br />
associated with harm ? A pilot<br />
study using a nicotine inhaler.<br />
<strong>Nicotine</strong> Tob Res 2000; 2: 327-<br />
336.<br />
(27) Shields PG. Tobacco<br />
Smoking, Harm Re<strong>du</strong>ction, and<br />
Biomarkers. J Natl Cancer Inst<br />
2002; 94: 1435-1444.<br />
(28) Sims TH, Fiore MC.<br />
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tobacco dependence ; what is<br />
the ideal <strong>du</strong>ration of <strong>therapy</strong> ?<br />
CNS Drugs 2002; 16: 653-662.<br />
(29) Hajek P, Mc Robbie H,<br />
Gillison F. Dependence potential<br />
of nicotine <strong>replacement</strong><br />
treatments : Effects of pro<strong>du</strong>ct<br />
type, patient characteristics and<br />
cost to user. Prev Med 2007; 44:<br />
230-234.<br />
(30) Jolicoeur DC, Richter KP,<br />
Ahluwalia JS, Mosier MC, et al.<br />
Smoking cessation, smoking<br />
re<strong>du</strong>ction and delayed quitting<br />
among smokers given nicotine<br />
patches and a self-help<br />
pamphlet. Subst Abuse 2003; 24:<br />
101-106.<br />
(31) Carpenter MJ, Hughes JR,<br />
Keely JP. Effect of smoking<br />
re<strong>du</strong>ction on later cessation : A<br />
pilot experimental study.<br />
<strong>Nicotine</strong> Tob Res 2003; 5:155-162.<br />
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Dai L, Leventhal BL. Fluctuations<br />
of material smoking <strong>du</strong>ring<br />
pregnancy. Obstet Gynecol 2003;<br />
101: 140-147.<br />
(33) Carpenter MJ, Hughes JR,<br />
Solomon W, Callas PW. Both<br />
smoking re<strong>du</strong>ction with nicotine<br />
<strong>replacement</strong> <strong>therapy</strong> and<br />
motivation al advice increase<br />
future cessation among smokers<br />
un motivated to quit. J Cons Clin<br />
Psychol 2004; 24 :371-381.<br />
(34) Aveyard P, West R.<br />
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BMJ 2007; 335: 37-41.<br />
(35) Le Houezec J, Le Cozannet<br />
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10 : 94-99.<br />
(36) Wishborg K. <strong>Nicotine</strong><br />
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Obstet Gynecol 2000; 9: 967-971.<br />
(37) Emery S, Gilpin E A, Ake C,<br />
Farkas AJ, et al. Charaterising<br />
and Identifying ”hard-core<br />
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Re<strong>du</strong>cing Prevalence. Am J Pub<br />
Health 2000; 90: 387-394.<br />
(38) Jarvis MA, Wardle J, Waller<br />
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(39) Augustson EM, Marcus SE.<br />
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subpopulations of continued<br />
smokers. A national perspective<br />
on the “hard-core” smoker<br />
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(40) Walsh RA, Paul CL, Tzelepis<br />
F, Stojanovski E. Quit smoking<br />
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2006; 17: 54-60.<br />
(41) Seidman DF, Covey LS.<br />
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Res 1999; 1: S201-S205.<br />
55 Re<strong>du</strong>cing cigarette consumption - Jean Perriot
Session 4<br />
Increase<br />
in the prescribed dose<br />
and possibility<br />
to combine 2 NTRs<br />
57
References<br />
Aveyard P, Johnson C,<br />
Fillingham S, Parsons A,<br />
Murphy M. Nortriptyline<br />
plus nicotine <strong>replacement</strong><br />
versus placebo plus<br />
nicotine <strong>replacement</strong> for<br />
smoking cessation:<br />
pragmatic randomised<br />
controlled trial. BMJ. 2008;<br />
336(7655): 1223-7.<br />
Dale LC, Hurt RD, Offord<br />
KP, Lawson GM, Croghan<br />
IT, Schroeder DR. Highdose<br />
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<strong>therapy</strong>. Percentage of<br />
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274: 1353-8.<br />
Hughes JR, Lesmes GR,<br />
Hatsukami DK, Richmond<br />
RL, Lichtenstein E, Jorenby<br />
DE, Broughton JO,<br />
Fortmann SP, Leischow SJ,<br />
McKenna JP, Rennard SI,<br />
Wadland WC,<br />
Heatley SA. Are higher<br />
doses of nicotine<br />
<strong>replacement</strong> more effective<br />
for smoking cessation?<br />
<strong>Nicotine</strong> Tob Res. 1999; 1:<br />
169-74.<br />
Hughes JR, Stead LF,<br />
Lancaster T.<br />
Antidepressants for<br />
smoking cessation. 2008.<br />
The Cochrane<br />
Colalboration. Published by<br />
John Wiley & Sons, Ltd.<br />
Medioni J, Berlin I, Mallet<br />
A. Increased risk of relapse<br />
rate after stopping nicotine<br />
<strong>replacement</strong> therapies : a<br />
mathematical modelling<br />
approach. Addiction. 2005;<br />
100: 247-54.<br />
Murray RP, Nides MA,<br />
Istvan JA, Daniels K. Levels<br />
of cotinine associated with<br />
long-term ad-libitum<br />
nicotine polacrilex use in a<br />
clinical trial. Addict Behav.<br />
1998; 23: 529-35.<br />
How to optimise the<br />
effectiveness of<br />
nicotine <strong>replacement</strong><br />
therapies ?<br />
Ivan Berlin<br />
Groupe Hospitalier Pitié Salpêtrière<br />
Faculty of medecine, Université Pierre & Marie Curie - Paris, France.<br />
<strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> (NRT) has<br />
been shown to be an effective aid to<br />
smoking cessation.<br />
It increases the probability of abstinence<br />
by 77% on average (Silagy et al. 2007).<br />
This presentation will review the<br />
possibilities of optimizing the efficacy of<br />
NRT.<br />
The following aspects of efficacy<br />
optimization will be addressed:<br />
1. high-dose NRT,<br />
2. combining several types of NRT, with<br />
different routes of administration,<br />
3. NRT before the quit date,<br />
4. combining NRT with bupropion or<br />
nortriptyline (antidepressants shown to be<br />
effective in smoking cessation),<br />
5. tailored dose adjustment of NRT,<br />
6. what happens if NRT is stopped?<br />
Figure 1 high dose nicotine patch studies In : Silagy C, Lancaster T, Stead L, Mant D, Fowler G.<br />
<strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> for smoking cessation (Cochrane Review). In: The Cochrane Library,<br />
Issue 3, 2004. Chichester, UK: John Wiley & Sons, Ltd.<br />
58
Use of high-dose NRT<br />
As a rule, increasing the dose of a drug<br />
shifts the dose-response curve to the right.<br />
The use of high doses firstly increases<br />
efficacy because more patients become<br />
responders, so more responders are<br />
"recruited"; secondly, by recruiting more<br />
responders, more patients exhibiting<br />
adverse effects will also be recruited. Highdose<br />
NRT may therefore suppress the urge<br />
to smoke more strongly, but more patients<br />
will experience nausea, for example.<br />
Studies to evaluate high fixed doses of<br />
NRT have not shown greater abstinence<br />
with high doses of NRT (35 or 44 mg/day)<br />
compared to the standard doses. These<br />
high doses lessened the withdrawal<br />
symptoms more than the lower standard<br />
doses, but at the expense of developing<br />
adverse effects. This is no surprising<br />
because every patient has his/her own<br />
optimum dose of nicotine, and doses that<br />
exceed the optimum dose do not enhance<br />
efficacy but may cause adverse effects.<br />
According to a meta-analysis of several<br />
studies that compared high fixed doses of<br />
NRT with standard doses, the high doses<br />
did not improve abstinence rate (odds ratio<br />
(OR): 1.18, 95% confidence interval (95%<br />
CI): 0.9-1.55) (Silagy et al. 2007). See<br />
Figure 1.<br />
Combining several types<br />
of NRT with different<br />
routes of administration<br />
The rationale for combining several types<br />
of NRT with different routes of<br />
administration (transdermal plus buccal<br />
absorption route: patch plus gum, patch<br />
plus lozenges, patch plus inhaler) is to<br />
provide by the patch a relatively stable<br />
plasma nicotine concentration, with no<br />
plasma peaks, to which are added plasma<br />
nicotine peaks, resulting from the more<br />
rapid absorption rate with the bucal<br />
absorption pro<strong>du</strong>cts. The combination of<br />
slowly absorbed and quickly absorbed<br />
pharmaceutical forms pro<strong>du</strong>ces a closer<br />
imitation of the situation while smoking:<br />
fluctuating concentrations of nicotine in<br />
the plasma and therefore the brain after<br />
each cigarette at the time of nicotine<br />
steady-state. The principle is similar to that<br />
seen in the treatment of type 1 (insulindependent)<br />
diabetes, in which fast-acting<br />
insulin is administered with meals, on top<br />
of the stable plasma insulin concentrations<br />
provided by an injection of intermediate or<br />
slow-acting insulin.<br />
The efficacy of combinations of several<br />
types of NRT using different routes of<br />
administration has been evaluated in many<br />
therapeutic trials. Meta-analysis of these<br />
trials shows that NRT combinations are<br />
more effective in terms of smoking<br />
abstinence than one type of NRT used<br />
alone (OR: 1.42, 95% CI: 1.14-1.76) (Silagy<br />
et al. 2007).<br />
NRT treatment before the<br />
quit date<br />
The summaries of pro<strong>du</strong>ct characteristics<br />
monography for nicotine patches<br />
recommend stopping smoking on the day<br />
NRT is started. However, this goal is not<br />
always achieved in clinical practice. This<br />
raises the question of whether there is any<br />
benefit and/or risk from intro<strong>du</strong>cing<br />
nicotine patch <strong>therapy</strong> before the quit<br />
date.<br />
The first randomized placebo-controlled<br />
study dates from 2004 (Schuurman et al.<br />
2004). See Figure 2.<br />
Placebo or one 15-mg nicotine patch/day<br />
were administered for 2 weeks before the<br />
quit date. After the quit date, the two<br />
groups received nicotine patches at a<br />
strength of 15 mg/day then 10 mg/day. Six<br />
months after the quit date, the abstinence<br />
rate was significantly higher in the nicotine<br />
pretreatment group than in the placebo<br />
pretreatment group (22% versus 12%).<br />
Other studies have confirmed this benefit<br />
(Shiffman & Ferguson 2008). This<br />
therapeutic benefit was not associated<br />
with an increase in adverse effects, and the<br />
tolerability of the nicotine pretreatment<br />
59 How to optimise the effectiveness of nicotine... - Ivan Berlin<br />
Rose JE, Behm FM,<br />
Westman EC, Kukovich P.<br />
Precessation treatment<br />
with nicotine skin<br />
patch facilitates smoking<br />
cessation. <strong>Nicotine</strong> Tob Res.<br />
2006; 8: 89-101.<br />
Schuurmans MM, Diacon<br />
AH, van Biljon X, Bolliger<br />
CT. Effect of pre-treatment<br />
with nicotine patch on<br />
withdrawal symptoms and<br />
abstinence rates in smokers<br />
subsequently quitting with<br />
the nicotine patch: a<br />
randomized controlled trial.<br />
Addiction. 2004; 99: 634-<br />
40.<br />
Shiffman S, Ferguson SG.<br />
<strong>Nicotine</strong> patch <strong>therapy</strong><br />
prior to quitting smoking :<br />
a meta-analysis.<br />
Addiction 2008; 103: 557-<br />
63.<br />
Silagy C, Lancaster T, Stead<br />
L, Mant D, Fowler G.<br />
<strong>Nicotine</strong> <strong>replacement</strong><br />
<strong>therapy</strong> for smoking<br />
cessation. 2007 The<br />
Cochrane Collaboration.<br />
Published by John Wiley &<br />
Sons, Ltd.
was similar regardless of the type of<br />
cigarette smoked <strong>du</strong>ring the pretreatment<br />
period (Rose et al. 2006). The use of<br />
nicotine patches before the planned quit<br />
date therefore seems justified.<br />
Figure 2 - Sustained abstinence rates<br />
- AP = active nicotine patch pre-treatment<br />
group<br />
- PP = placebo patch pre-treatment group<br />
P
Tailored dose adjustment<br />
of NRT<br />
A smoker’s nicotine requirement, which<br />
can be assessed by measuring salivary<br />
cotinine, remains identical for several years.<br />
In fact, smokers’ salivary cotinine levels<br />
remain stable whether they are smoking,<br />
using NRT while abstaining from smoking<br />
or using cigarettes and NRT simultaneously<br />
(Murray et al. 1998). This suggests that all<br />
smokers have their own "nicotine dose".<br />
This dose, expressed by salivary cotinine for<br />
example, exhibits considerable interindivi<strong>du</strong>al<br />
variability (about 30-fold).<br />
NRT replaces the nicotine obtained<br />
through smoking and tailored dose<br />
adjustment is therefore necessary for<br />
greater efficacy. In clinical practice, in the<br />
absence of experimental data, smoking<br />
cessation specialists tend to adjust the daily<br />
dose of NRT on the basis of the withdrawal<br />
symptoms. Another method for adjusting<br />
the dose would be to measure salivary<br />
cotinine before smoking cessation and to<br />
adjust the daily dose of NRT to obtaining<br />
the same salivary concentration of cotinine<br />
after smoking cessation, than in smoking<br />
state and provide by this means a 100%<br />
nicotine <strong>replacement</strong>. Some ongoing<br />
studies will answer these questions.<br />
What happens if NRT is<br />
stopped?<br />
If smokers have their own personal<br />
nicotine needs which remain stable over<br />
time, stopping NRT after a short period of<br />
administration (3 or 6 months) may<br />
compromise its long-term efficacy.<br />
At the end of the treatment period, the<br />
relationship between NRT and smoking<br />
abstinence is dose-dependent (Hughes et<br />
al. 1999). This dose-dependent efficacy<br />
seems to disappear after stopping NRT<br />
(Hughes et al. 1999). A modeling study<br />
including 21 smoking cessation trials<br />
comparing NRT to placebo showed that the<br />
probability of relapse after stopping NRT<br />
was 44% higher after withdrawal of NRT<br />
than after withdrawal of placebo See<br />
Figure 4 (Medioni et al. 2005). If future<br />
studies confirm this, it means that NRT<br />
should be administered for longer periods<br />
than currently recommended and that it<br />
should be tapered off very gra<strong>du</strong>ally.<br />
Figure 4 - Likelihood of relapse after stopping<br />
NRT or placebo (dotted line) In Medioni et al.<br />
2005.<br />
Conclusions<br />
1. It has not been demonstrated that high<br />
fixed doses of NRT lead to higher abstinence<br />
rates than the doses usually used.<br />
2. Combinations of several types of NRT<br />
with different routes of administration can<br />
be more effective than using one type of<br />
NRT alone.<br />
3. NRT pretreatment (with patches)<br />
before the quit date increases the<br />
probability of abstinence.<br />
4. To date, there are no experimental<br />
data to justify combining NRT with<br />
bupropion (or with nortriptyline).<br />
5. Tailored dose adjustment of NRT is<br />
frequently used by smoking cessation<br />
specialists in clinical practice. Experimental<br />
data should confirm whether or not this<br />
therapeutic approach increases the<br />
probability of abstinence and whether this<br />
dose adjustment should be based on the<br />
clinical symptoms of smoking cessation or<br />
on determining salivary cotinine levels.<br />
6. Some data suggest that there may be a<br />
risk of relapse if NRT is withdrawn too<br />
soon. Future studies should provide precise<br />
answers about the possible relationships<br />
between withdrawal of NRT and the risk of<br />
relapse to smoking. ■<br />
61 How to optimise the effectiveness of nicotine... - I Berlin
Session 5<br />
Temporary cessation<br />
63
References<br />
(1) Hughes J, Callas P,<br />
Peters E. Interest in<br />
gra<strong>du</strong>al cessation. Nic<br />
Tob &Res 2007: 671-675.<br />
(2) Gallup Organization.<br />
Attitudes and<br />
behavoiurs related to<br />
smoking cessation.<br />
1999. New York.<br />
(3) Jiménez-Ruiz CA,<br />
Fagerström KO.<br />
Re<strong>du</strong>ction to quit.<br />
Algorhytm. Prev Tab<br />
2006; 8(Sup): 34-37.<br />
(4) Peri-operative<br />
smoking control. French<br />
Conference of Experts.<br />
2005.<br />
(5) Teadom A, Cropley<br />
M. Effects of preoperative<br />
smoking<br />
cessation on the<br />
incidence and risk of<br />
intraoperative and<br />
post-operative<br />
complications in a<strong>du</strong>lts<br />
smokers: a systematic<br />
review. Tobacco Control<br />
2006; 15: 352-358.<br />
(6) Warner D. Preoperative<br />
smoking<br />
cessation. The role of<br />
primary care providers.<br />
Mayo Clin Proc 2005;<br />
80: 252-258.<br />
(7) Rigotti N, Munafo M et<br />
al. Interventions for<br />
smoking cessation in<br />
hospitalized patients.<br />
Cochrane Database<br />
System Review. Issue 4.<br />
2003.<br />
Intro<strong>du</strong>ction<br />
<strong>Nicotine</strong><br />
<strong>replacement</strong> <strong>therapy</strong><br />
for temporary<br />
abstinence<br />
<strong>Carlos</strong> A. Jiménez-Ruiz<br />
Smoker’s Clinic, Communidad de Madrid<br />
Madrid, Spain.<br />
Smoking is the first preventable cause of<br />
death. About half of smokers will prematuraly<br />
die from smoking–related disorders.<br />
Nevertheless, the mayority of smokers do not<br />
want to make a serious attempt to quit in the<br />
next month. Some of them want to re<strong>du</strong>ce the<br />
number of cigarettes smoked daily and most<br />
of them want to continue smoking at the<br />
same level (1-3).<br />
Some smokers unwilling to quit can be<br />
forced to temporary abstinence. A smoker in<br />
temporary abstinence can be defined as a<br />
smoker who does not want to quit and, for<br />
different reasons, must refrain from smoking<br />
<strong>du</strong>ring a period of time. For example: when<br />
the smoker is at home, at workplace, in public<br />
transports or at hospital. Moreover, different<br />
studies have demonstrated that quitting<br />
smoking before surgery is associated with a<br />
significantly decrease in the rate of surgical<br />
complications (4-6). So, physicians should<br />
recommend their patients to quit smoking or,<br />
at least, to maintain temporary abstinence<br />
before being operated on.<br />
On the other hand, we have to consider<br />
that temporary abstinence can cause nicotine<br />
withdrawal syndrome and craving. These<br />
symptoms can bother the smoker his/her real<br />
life and even can be dangerous for the subject<br />
if he/she is hospitalized <strong>du</strong>e to a disease<br />
related or not with smoking. There are some<br />
reasons that can support the use of <strong>Nicotine</strong><br />
Replacement Therapy (NRT) to help smokers<br />
to keep temporary abstinence.<br />
Temporary abstinence is a novel subject<br />
and we are in lack of enough scientific<br />
experience to be able to make evidence-based<br />
guidelines for this issue. Nevertheless, taking<br />
into account the results of different studies<br />
some recommendations can be made. In this<br />
chapter, several questions will be addressed.<br />
At the end of the chapter, some<br />
recommendations are written according to<br />
the answers to these questions.<br />
S. Nardini.<br />
64
Should health<br />
professionals recommend<br />
temporary abstinence?<br />
All health professionals should advice<br />
smokers to quit. Quitting smoking is the<br />
healthiest measure for every smoker.<br />
Nevertheless, most smokers do not want to<br />
quit. Should these smokers unwilling to quit<br />
be advised of temporary abstinence?<br />
Most smokers unwilling to quit can be<br />
forced to maitain temporary abstinence in<br />
different real-life situations (at home,<br />
workplaces, public transportation, bars and<br />
restaurants, and so on). Sometimes these<br />
occasions last less than 4-8 hours and smokers<br />
can avoid smoking without suffering craving<br />
or nicotine withdrawal symptoms.<br />
Nevertheless, others can be prolonged and the<br />
smokers will suffer from nicotine withdrawal.<br />
In these cases, the use of NRT to maintain<br />
temporary abstinence could be<br />
recommended by health professionals.<br />
There are two special situations where<br />
temporary abstinence could be recommended<br />
by health professionals to smokers unwilling<br />
to quit: hospitalized smokers and smokers<br />
who are going to be operated on (Elective<br />
surgery). In these cases temporary abstinence<br />
can be followed of health benefits and can<br />
increase the motivation to quit definitely (7-<br />
11).<br />
Should health<br />
professionals recommend<br />
using NRT for temporary<br />
abstinence?<br />
Most smokers have dependence on nicotine.<br />
They need to consume the drug in order to<br />
keep an adecuate level of nicotine in their<br />
blood. Each smoker is able to obtain from<br />
cigarettes the amount of nicotine that he/she<br />
needs. Smokers vary the number of cigarette<br />
or the number of inhalations or even, the form<br />
of inhalation to obtain adecuate level of<br />
nicotine in the blood (12).<br />
Nevertheless, half-life of nicotine is about<br />
60-120 minutes. It is metabolized into cotinine<br />
in a short period of time. So, temporary<br />
abstinence can pro<strong>du</strong>ce a re<strong>du</strong>ction of<br />
nicotine in the blood and leads the smoker to<br />
withdrawal syndrome.<br />
Most smokers are dependent on nicotine<br />
and abstinence from smoking results in<br />
tobacco withdrawal and craving, which<br />
manifest as clinical symptoms within a few<br />
hours of smoking the last cigarette. Craving<br />
and withdrawal symptoms can be controlled<br />
by supplying nicotine from sources other than<br />
cigarettes, such as NRT. Clinical studies of<br />
short-term abstinence show that all NRT<br />
formulations relieve tobacco withdrawal<br />
symptoms and craving. Using NRT to maintain<br />
temporary abstinence allows smokers to<br />
re<strong>du</strong>ce their cigarette consumption (and<br />
intake of toxic substances in smoke) while<br />
maintaining their nicotine dose. Data suggests<br />
that smokers who use NRT can significantly<br />
re<strong>du</strong>ce the withdrawal symptoms and craving<br />
caused by abstaining from cigarettes (13).<br />
There are several forms of NRT, including<br />
nicotine gum, patches, lozenges, nasal spray<br />
and oral inhalators. All of them are available<br />
in the European Union and most of them do<br />
not need medical prescription. Use of these<br />
pro<strong>du</strong>cts will approximately double the rate of<br />
successful quitting in the outpatient setting<br />
(14). Moreover, all of them can help smokers<br />
to maintain temporary abstinence. On the<br />
other hand, NRT is well tolerated and has a<br />
documented record of safety in healthy<br />
smokers and, even in smokers with smokingrelated<br />
diseases (15).<br />
Taking into account these considerations,<br />
the answer to this question would be as<br />
follows: When the <strong>du</strong>ration of temporary<br />
abstinence is going to be as large as can cause<br />
nicotine withdrawal and craving, health<br />
professionals should recommend to their<br />
patients using NRT. In these cases, NRT is<br />
effective to alleviate nicotine withdrawal<br />
symptoms and craving and has a broad safety<br />
profile.<br />
65 <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> … - <strong>Carlos</strong> A. Jiménez-Ruiz<br />
(8) Molyneux A, Lewis S<br />
et al. Clinical trial<br />
comparing NRT plus<br />
brief counselling, brief<br />
counselling alone, and<br />
minimal intervention<br />
on smoking cessation in<br />
hospital inpatients.<br />
Thorax 2003; 58: 484-<br />
488.<br />
(9) Simon JA et al.<br />
Smoking cessation after<br />
surgery. A randomized<br />
trial. Arch Interm Med.<br />
1997; 157: 1371- 6.<br />
(10) Stevens et al.<br />
Implementation and<br />
effectiveness of a brief<br />
smoking cessation<br />
intervention for<br />
hospital patients.<br />
Medical Care 2000; 38:<br />
451-9.<br />
(11) Bize et al.<br />
Effectiveness of a low<br />
intensity smoking<br />
cessation intervention<br />
for hospitalized<br />
patients. Eur J Cancer<br />
Prev. 2006; 15: 464-70.<br />
(12) Benowitz N.<br />
Pharmacology of<br />
nicotine. Addiction and<br />
therapeutics. An Rev<br />
Pharmacol Toxicol.<br />
1996; 36: 597-613.<br />
(13) Le Houzec et al.<br />
Smoking re<strong>du</strong>ction and<br />
temporary abstinence:<br />
new approaches for<br />
smoking cessation. J<br />
Mal Vas 2003; 28: 293-<br />
300.<br />
(14) Stead LF et al.<br />
<strong>Nicotine</strong> <strong>replacement</strong><br />
<strong>therapy</strong> for smoking<br />
cessation. Cochrane<br />
Database System<br />
Review 2008 CD000146<br />
Review.
(15) Fiore MC, Jaen CR<br />
et al. Treating Tobacco<br />
use and dependence:<br />
2008 Update. Clinical<br />
Practice Guideline.<br />
Department of Health<br />
and Human Services.<br />
Public Health Service.<br />
2008.<br />
(16) McBride CM et al.<br />
Understanding the<br />
potential of teachable<br />
moments. The case of<br />
smoking cessation.<br />
Health E<strong>du</strong>c Res 2003<br />
18: 156-170.<br />
(17) France EK et al.<br />
Smoking cessation<br />
interventions among<br />
hospitalized patients.<br />
Whta have we<br />
learned?. Prev Med<br />
2001; 32: 376-388.<br />
(18) Niaura R et al.<br />
Relevance of cue<br />
reactivity to<br />
understanding alcohol<br />
and smoking relapse. J<br />
Abnorm Psychol 1988;<br />
97: 133-152.<br />
(19) Rigotti N, Munafo<br />
M et al. Interventions<br />
for smoking cessation<br />
in hospitalized patients.<br />
Cochrane Database<br />
System Review. Issue 4.<br />
2007.<br />
(20) Cropley et al. The<br />
effectiveness of<br />
smoking cessation<br />
interventions prior to<br />
surgery. A sytematic<br />
review. Nic Tob &Res<br />
2008 10: 407-412.<br />
In which cases should we<br />
recommend NRT for<br />
temporary abstinence?<br />
NRT for temporary abstinence can be<br />
recommeded in three different cases:<br />
a) in those smokers who are forced to live<br />
in smoke-free enviromments <strong>du</strong>ring a period<br />
of time that is as large as causing them craving<br />
or nicotine withdrawal syndrome (among<br />
these patients we have to consider those who<br />
are travelling frequently in public transports,<br />
those who work in smoke-free worplaces,<br />
those who like or are force to keep smoke-free<br />
enviromment at home and those who visit<br />
smoke-free recreational venues: discos, bars,<br />
restaurants and so on),<br />
b) in those smokers who are hospitalized<br />
for different reasons and,<br />
c) in those smokers who are going to be<br />
operated on (“elective surgery”).<br />
Which benefits can<br />
pro<strong>du</strong>ce temporary<br />
abstinence in hospitalized<br />
patients?<br />
Hospitalization is a excellent “teachable<br />
moment” for smokers. A “teachable moment”<br />
is an event that motivates indivi<strong>du</strong>als to<br />
change health behaviours that increase risk<br />
(16). There is strong evidence that<br />
hospitalization is associated with an increased<br />
rate of spontaneous smoking cessation<br />
compared with the general population. It has<br />
been found that 1-year self-reported tobacco<br />
abstinence rates after general hospitalization<br />
tend to be higher than the rate of<br />
spontaneous quitting in the general<br />
population( approximately 10% to 15% vs 3%<br />
to 5%, respectively (17).<br />
On the other hand, we have to consider<br />
that the hospitalized smoker is living in a<br />
smoke-free enviromment that can help<br />
him/her to maintain abstinence. Nevertheless,<br />
nicotine is highly addicitve, and abstinence<br />
from nicotine can causes withdrawal<br />
symptoms and craving that could present a<br />
barrier to quitting. In this context, using NRT in<br />
hospitalized smokers in order to help them to<br />
maintain abstinence should be strongly<br />
recommended.<br />
Probably, quitting smoking while<br />
hospitalization can be easier than in other<br />
enviromment. Smoking behaviour is modified<br />
to a substantial degree by envirommental cues<br />
that become associated with smoking.<br />
Withdrawal symptoms may be accentuated in<br />
the smokers natural enviromment because<br />
these smoking related cues elicit withdrawal<br />
syndrome. When the smoker s enviromment is<br />
modified, such as cues may not be operative<br />
and withdrawal symptoms may be better<br />
controlled by NRT (18).<br />
A recent meta-analysis in hospitalized<br />
patients has found that intensive counselling<br />
which is provided to the patient while he/she<br />
is hospitalized and which is prolonged <strong>du</strong>ring<br />
at least one month after discharge, is the only<br />
intervention that can increase significantly<br />
smoking cessation rates after discharge. OR:<br />
1.65 (1.44-1.90) (19). Nevertheless, authors<br />
conclude that although combining NRT with<br />
intensive counselling has not increased<br />
significantly the smoking cessation rates, the<br />
evidences of benefits from using NRT have<br />
increased with respect to the last revision (19).<br />
Moreover, in a recent systematic review of 7<br />
randomized controlled trials that included 870<br />
patients hospitalized for surgery, Cropley et al<br />
concluded that all interventions ( most of<br />
them counselling plus NRT) were effective<br />
with the short term quit rates as high as 95%<br />
and averaging 55% (20). Nevertheless, authors<br />
agree with the need to prolonged<br />
interventions after discharge.<br />
So taking into account all of these<br />
considerations, we can conclude that<br />
hospitalization is an excellent “teachable<br />
moment” and represents a unique<br />
opportunity for health professionals to advice<br />
their patients to quit. Those, who in spite of<br />
that, do not want to quit definitely should be<br />
66
ecommended temporary abstinence while<br />
hospitalization. NRT could be used in order to<br />
help them to keep temporary abstinence<br />
without suffering from nicotine withdrawal<br />
syndrome.<br />
Which benefits can<br />
pro<strong>du</strong>ce temporary<br />
abstinence in perioperative<br />
period?<br />
Smoking contributes to many<br />
perioperative complications. Three are of<br />
greatest clinical importance: pulmonary<br />
complications, cardiovascular complications<br />
and complications related to impaired healing<br />
of bones and surgical wounds (4-6). Table 1<br />
shows smoking contributing factors to these<br />
complications.<br />
Quitting smoking re<strong>du</strong>ces the risk of perioperative<br />
complications. What is unknown in<br />
most cases is the minimum <strong>du</strong>ration of<br />
preoperative abstinence to confer benefit. We<br />
know that the frequency of complications in<br />
patients who have been abstinent for several<br />
months is similar to that of patients who have<br />
never smoked (21-22). Some studies suggest<br />
that at least two months of preoperative<br />
abstinence is required to fully benefit (21-23).<br />
Nevertheless, there is some evidence that<br />
quitting smoking at least 3 weeks before<br />
surgery is beneficial as, it re<strong>du</strong>ces the local<br />
surgical site s complications. Eventhough,<br />
smoking cessation less than 48 hours before<br />
surgical proce<strong>du</strong>re should be beneficial (4-6).<br />
P. Vitoria.<br />
Temporary increasing in cough and bronchial<br />
secretions are the only related adverse events<br />
that can be harmful just after smoking<br />
cessation. Nevertheless, this conclusion is not<br />
supported on data and smokers should not be<br />
discouraged from quitting before surgery on<br />
this basis (4-6).<br />
Taking into account these connsiderations,<br />
we can conclude that all smokers should be<br />
advice to quit before surgical proce<strong>du</strong>re. To<br />
smokers who don’t want to quit definitely<br />
temporary abstinence should be strongly<br />
recommended at least 3 weeks before surgery.<br />
NRT can be used in order to help smokers to<br />
keep temporary abstinence <strong>du</strong>ring<br />
preoperative period. We know that NRT<br />
provides a greater number of temporary<br />
abstinence among surgery hospitalized patients<br />
versus absence of proce<strong>du</strong>re. RR of abstinence<br />
with NRT is 1.38 (4-6). On the other hand, we<br />
know that using NRT to obtain temporary<br />
abstinence <strong>du</strong>ring the pre-operative period has<br />
another interesting advantages:<br />
a) it re<strong>du</strong>ces withdrawal symptoms and<br />
craving and help smokers to keep abstinence,<br />
b) it re<strong>du</strong>ces the amount of CO inhaled and<br />
improve oxygenation,<br />
c) it may re<strong>du</strong>ce aggressiveness observed<br />
<strong>du</strong>ring an 8 hours smoking deprevation,<br />
d) it can control the changes observed in<br />
the electroencephalogram <strong>du</strong>e to smoking<br />
deprevation,<br />
e) it can diminish the need for analgesic<br />
drug <strong>du</strong>ring the post-operative period.<br />
However, concerns have been expressed<br />
regarding the safety of NRT for surgical<br />
patients. These concerns arise from the facts<br />
that smokers are at increased risk of impaired<br />
healing of surgical wounds and bones (24).<br />
We know that prolonged exposure of<br />
experimental animals to high doses of nicotine<br />
can impair the healing of surgical wounds (25).<br />
Nevertheless, no studies have used doses of<br />
nicotine comparable to those provided by<br />
NRT.<br />
67 <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> … - <strong>Carlos</strong> A. Jiménez-Ruiz<br />
(21) Warner Ma et al.<br />
Role of preoperative<br />
cessation of smoking<br />
and other factors in<br />
post-operative<br />
pulmonary<br />
complications: a<br />
blinded prospective<br />
study of coronry artery<br />
bypass patients. Mayo<br />
Clinic Porc 1989; 64:<br />
609-616.<br />
(22) Nakawaga et al<br />
Relationship between<br />
the <strong>du</strong>ration of the preoperative<br />
smoke- free<br />
period and the<br />
incidence of postoperative<br />
pulmonary<br />
complications after<br />
pulmonary surgery.<br />
Chest 2001; 120: 705-<br />
710.<br />
(23) Warner MA et al.<br />
Preoperative cessation<br />
of smoking and<br />
pulmonary<br />
complications in<br />
coronary artery bypass<br />
patients.<br />
Anesthesiology 1984;<br />
60: 380-383.<br />
(24) Benowitz et al.<br />
Cardiovascular toxicity<br />
of nicotine: implications<br />
for nicotine<br />
<strong>replacement</strong> <strong>therapy</strong>. J<br />
Am Coll Cardiol 1997;<br />
29: 1422-1431.<br />
(25) Forrest CR et al.<br />
Evidence for nicotine<br />
in<strong>du</strong>ce skin flap<br />
ischemic necrosis in the<br />
pig. Can J Physiol<br />
Pharmacol 1994; 72: 30-<br />
38.<br />
(26) Sorensen LT et al.<br />
Abstinence from<br />
smoking re<strong>du</strong>ces<br />
incisional wound<br />
infection: a randomized<br />
controlled trial. Am<br />
Surg 2003; 238: 1-5.
(27) Broms U et al.<br />
Smoking re<strong>du</strong>ction<br />
predicts cessation.<br />
Longitudinal evidence<br />
from the Finish a<strong>du</strong>lt<br />
twin cohort. 2008; 10:<br />
423-27.<br />
(28)<br />
Stead LF et al.<br />
Interventions to re<strong>du</strong>ce<br />
harm from continued<br />
tobacco use. Cochrane<br />
Database System<br />
Review. CD 005231.<br />
12007.<br />
(29)<br />
Rigotti N et al.<br />
Predictors of smoking<br />
cessation after coronary<br />
artery bypass graft<br />
surgery. Results of a<br />
randomized trial with 5<br />
year follow up. An<br />
Interm Med 1994; 120:<br />
287-293.<br />
(30)<br />
Warner DO et al.<br />
Smoking behabiour and<br />
perceived stress in<br />
cigarettes smokers<br />
undergoing elective<br />
surgery. Anesthesiology<br />
2004; 100: 1125-1137.<br />
Table 1-Smoking as a contributing factor for perioperative complications<br />
1. - Pulmonary complications. The increase in the relative risk (RR) is 1.7.<br />
1.1.- Smokers can suffer from smoking related respiratory pathology.<br />
1.2.- Even “healthy” smokers can suffer from:<br />
1.2.1.- Impaired ciliary function.<br />
1.2.2.- Increased mucus pro<strong>du</strong>ction.<br />
1.2.3.- Retained secretions.<br />
1.2.4.- Alterations in lung inmune responses.<br />
2.- Cardiovascular complications. The increase in the relative risk (RR) is 3.<br />
2.1.- Smokers can suffer from smoking related cardiovascular disorders.<br />
2.2.- Even “healthy” smokers can suffer from:<br />
2.2.1.- Endothelial damage.<br />
2.2.2.- Oxidant injury.<br />
2.2.3.- Neutrophil activation.<br />
2.2.4.- Enhacement of thrombosis.<br />
2.2.5.- Enhacement of aterosclerosis.<br />
2.2.6.- Increasing coagulability.<br />
2.2.7.- Increasing simpathetic tone.<br />
2.2.8.- Decreasing the capacity of blood to carry oxygen.<br />
3.- Complications related to impaired healing of bones and surgical wounds.<br />
The increase in the relative risk (RR) is 2.<br />
3.1.- Smokers can suffer from smoking related wounds disorders. Among these:<br />
wound dehiscence and infection, and nonunion of fractured bones.<br />
3.2.- Even “healthy” smokers can suffer from:<br />
3.2.1.- Decreasing tissue oxygenation secondary to vasoconstriction,<br />
carboxyhemoglobin and inhibition of inmune responses.<br />
An important recent investigation studied<br />
experimental wounds in smokers.<br />
One group of smokers continued smoking,<br />
another group stopped smoking without<br />
using NRT and another group quit smoking<br />
using NRT.<br />
Abstinence from smoking substantially<br />
decreased the rate of wound infection,<br />
whether or not NRT was used (26).<br />
This study supports the idea that NRT is<br />
safe in these patients.<br />
Taking into account all of these<br />
considerations we can conclude that NRT<br />
should considered for helping surgical patients<br />
maintain abstinence before and after surgery.<br />
68
Can temporary abstinence<br />
promote complete<br />
smoking cessation?<br />
This is an important issue to be considered<br />
before health professionals could recommend<br />
temporary abstinence. Recommendation of<br />
temporary abstinence could be misunderstood<br />
by some smokers as a permission to continue<br />
smoking. Moreover, temporary abstinence<br />
could lead to some smokers to a<br />
misinterpretation of being able to control<br />
their smoking and then have a bad influence<br />
on their motivation to quit. So, it is important<br />
to analize how temporary abstinence can<br />
influence on the motivation to quit. Does<br />
temporary abstinence increase or decrease<br />
motivation to quit definitely?<br />
To our knowledge there is no data on this<br />
issue. Nevertheless, we know that re<strong>du</strong>cing<br />
the number of cigarettes smoked daily, using<br />
or not NRT, promotes smoking cessation (1-27-<br />
28). Even, we know that using NRT to obtain<br />
smoking re<strong>du</strong>ction pro<strong>du</strong>ces higher smoking<br />
cessation rates than using placebo (28).<br />
Temporary abstinence can be considered as a<br />
way of re<strong>du</strong>cing smoking. So, from this point<br />
of view it could be drawn that temporary<br />
abstinence promotes smoking cessation.<br />
Nevertheless, more studies are needed before<br />
drawing substantive conclusions.<br />
Although, there are not any direct data on<br />
the relationship between temporary<br />
abstinence and complete smoking cessation,<br />
we have many indirect data which suggest<br />
that temporary abstinence can promotes<br />
smoking cessation.<br />
Some of these data are as follows:<br />
a) temporary abstinence <strong>du</strong>ring<br />
hospitalization, in these cases, it has been<br />
found that 1-year self-reported tobacco<br />
abstinence rates after general hospitalization<br />
tend to be higher than the rate of<br />
spontaneous quitting in general population<br />
(approximately 10% to 15% vs 3% to 5%,<br />
respectively (17),<br />
b) temporary abstinence before and after<br />
surgery. Smokers who have kept temporary<br />
abstinence before being operated on have<br />
higher tobacco abstinence rates after surgical<br />
intervention than the general population. The<br />
highest rate of prolonged post-operative<br />
abstinence are assocated with major surgical<br />
proce<strong>du</strong>res, such as lung resection for<br />
carcinoma or coronary artery bypass grafting<br />
(29). In general, it could be considered that<br />
patients who underwent more extensive<br />
surgical proce<strong>du</strong>res were more likely to<br />
remain abstinent from cigarettes for 30 days<br />
after surgery than those who underwent more<br />
minor proce<strong>du</strong>res (30).<br />
Recommendations<br />
A smoker in temporary abstinence can be<br />
defined as a smoker who does not want to<br />
quit and, for different reasons, must refrain<br />
from smoking <strong>du</strong>ring a period of time.<br />
NRT for temporary abstinence can be<br />
recommended in three different cases:<br />
a) in those smokers who are forced to live<br />
in smoke-free enviromments <strong>du</strong>ring a period<br />
of time that is as large as causing them craving<br />
or nicotine withdrawal syndrome (among<br />
these patients we have to consider those who<br />
are travelling frequently in public transports,<br />
those who work in smoke-free worplaces,<br />
those who like or are force to keep smoke-free<br />
enviromment at home and those who visit<br />
smoke-free recreational venues: discos, bars,<br />
restaurants and so on.)<br />
b) in those smokers who are hospitalized<br />
for different reasons and<br />
c) in those smokers who are going to be<br />
operated on (“elective surgery”). In these<br />
cases, temporary abstinence should be<br />
strongly recommended at least 3 weeks before<br />
surgery. Although it would cause more<br />
benefits 2 months before. ■<br />
69 <strong>Nicotine</strong> <strong>replacement</strong> <strong>therapy</strong> … - <strong>Carlos</strong> A. Jiménez-Ruiz
Session 6<br />
European Program<br />
PESCE<br />
71
(†) Jean Daver died the<br />
30th of June 2009. His<br />
involvement in tobacco<br />
issues and in the EU<br />
politic on tobacco<br />
control has been his last<br />
fight after a life<br />
dedicated to public<br />
health priorities.<br />
*This project receives<br />
financial support from<br />
the European Commission<br />
Public Health<br />
Programme 2003-2008<br />
(Grant Agreement 200<br />
5319). The responsibility<br />
of the information<br />
contained in this<br />
document lies with the<br />
authors.<br />
The Commission is not<br />
responsible for any use<br />
that may be made of the<br />
information contained<br />
therein.<br />
Program Pesce<br />
General Practitioners and the economics of smoking cessation in<br />
Europe<br />
Jean Daver (†)<br />
Toulouse, France.<br />
In June 2006, the European Commission<br />
awarded a 60% co-funding to PESCE*, a<br />
European project drawing together 31<br />
partners from 27 countries.<br />
The grant was awarded because of its<br />
multidisciplinary, multicultural and innovative<br />
nature, linking social and economic<br />
considerations. The PESCE project runs from<br />
September 2006 to May 2008 and operated<br />
with a total budget of 658.000 €.<br />
Fifteen associated partners contributed<br />
financially and shared the scientific<br />
responsibility of the project.<br />
Another sixteen collaborating partners<br />
contribute their expert advice and experience<br />
as well as high level experts chosen for their<br />
special knowledge and scientific reputation.<br />
Tabac & Liberté (France), the largest nongovernmental<br />
organisation in Europe<br />
specialising in smoking cessation training of<br />
General Practitioners and health professionals<br />
at a national level, is the initiator and<br />
coordinator of this large-scale project.<br />
The elaboration of the PESCE project<br />
together with the European project partners<br />
is based on four previous EU projects in the<br />
field of general practitioners, health<br />
professionals and smoking cessation which<br />
were finalised between 1998-2006.<br />
Project objective<br />
The general objectives of the project were<br />
to develop evidence based policy<br />
recommendations and practice based<br />
implementation strategies through a large<br />
scale European consultation process, taking<br />
into account national and cultural<br />
specificities.<br />
Promote increased smoking cessation<br />
interventions of General Practitioners (GPs) in<br />
Europe by addressing the socio-economic<br />
environment of their practice.<br />
Highlight the economic benefit from<br />
increased smoking cessation interventions on<br />
the health care budget in Europe.<br />
Motivate decision makers to change the<br />
working environment of GPs through political<br />
measures.<br />
Outcomes<br />
Report on costs and benefits of measures<br />
to increase general practitioner advice giving<br />
with respect to smoking cessation.<br />
Report on factors that facilitate and hinder<br />
use of smoking cessation interventions by GPs,<br />
and of interventions to change GP behaviour.<br />
European consensus on evidence based<br />
policy recommendations and practice based<br />
implementation strategies to improve<br />
smoking cessation interventions of GP’s in<br />
Europe. See Table 1 page 69.<br />
Better integration of prevention in health<br />
care systems in Europe.<br />
72
1. To what extent do GPs in Europe currently give smoking cessation advice?<br />
. Fewer routinely enquire about smoking<br />
. Majority enquire about smoking status<br />
. Types of support and treatment given<br />
status of existing patients, or routinely<br />
of new patients.<br />
vary from country to counrty.<br />
advise all smokers to quit.<br />
2. What factors influence GPs’ engagement in smoking cessation?<br />
GP Smoking Behaviour and Attitudes Patient Characteristics<br />
Structural Barriers<br />
. Smoking GPs give cessation advice less . GPs are more likely to give cessation . GPs more likely to give smoking cessa-<br />
frequently than non-smoking GPs. In a few advice where patient symptoms are seen as tion advice if they have received training.<br />
countries, GPS smoke in front of patients. smoking-related, and with heavier smokers . Many GPs request more training in and<br />
. Some GPs feel that cessation advice is than lighter smokers.<br />
information about smoking cessation<br />
not part of their job, uncomfortable, unre- . GPs do not always intervene with pre- methods and treatments.<br />
warding and ineffective.<br />
gnant smokers and those with young chil- . Lack of time and of reimursement seen<br />
. Concerns about harming the doctordren, even where national guidelines as barriers by some GPs (proportions vary<br />
patient relationship are a deterrent to recommend this.<br />
across countries).<br />
giving cessation advice.<br />
3. What interventions have been implemented to improve GPs’ engagement in smoking cessation?<br />
. 26 intervention studies from 9 countries.<br />
. Studies are of variable, often poor, quality. Many do not examine impact of an intervention on GPs’ routine engagement in smoking cessation<br />
Training and awareness raising (n=18) Financial (n=3)<br />
Data recording and information manage-<br />
. Brief awareness raising & general trai- Macro and micro changes to GP payment ment (n=2).<br />
ning.<br />
systems for engaging in smoking cessation. Improvements in data recording practice<br />
Minimal Intervention Strategy, Stage/Cycle<br />
(may support increased engagement in smo-<br />
of Change, providing information/materials.<br />
king cessation).<br />
. 7 of the studies (3 RCTs, 4 weaker studies)<br />
Other (n=3). Multi-faceted interventions,<br />
examined impact on routine engagement in<br />
participation in cessation research study.<br />
smoking cessation.<br />
73 Program Pesce - Jean Daver<br />
Data recording and information management<br />
(n=2):<br />
. Training and feedback increased the<br />
amount of data recording and giving of cessation<br />
advice (1 large study).<br />
Other (n=3):<br />
. Improvements in self-confidence and<br />
rates of giving cessation advice.<br />
4. How effective areinterventions to improve GPs’ engagement in smoking cessation?<br />
Training and awareness raising interventions (n=18) Financial interventions (n=3):<br />
. Stage of Change training ( 1 long term . Offering “quality payments” for recor-<br />
study) increased frequency and quality of ding smoking status and giving cessation<br />
GP advice and counselling, and improved advice increased frequency of doing both (1<br />
patient outcomes.<br />
large 15-year good quality study).<br />
. Providing a desktop resource (1 short . Making NRT free to lower income<br />
term study) increased GP advice and coun- patients increased frequency of prescribing<br />
selling.<br />
(1 large study).<br />
. Other studies found positive outcomes . Offering small incentives linked to<br />
(weaker quality, differences not always patient outcomes was ineffective (1 small<br />
significant).<br />
pilot study).<br />
Table 1.
Evidence Based Policy<br />
Recommendations<br />
Practice Based<br />
Implementation Strategies<br />
Based on the conclusions of the<br />
international literature search, PESCE Project<br />
partners, researchers, experts and policy<br />
makers from 27 countries have developed 15<br />
evidence based policy recommendations and<br />
practice oriented implementation strategies<br />
to increase engagement of GP’s in smoking<br />
cessation interventions.<br />
The recommendations have been categorized<br />
in 4 areas: Capacity Building, Resources, Policy<br />
Framework and Communication.<br />
Capacity building<br />
1. To increase the professional<br />
competence in smoking cessation<br />
interventions, training in smoking cessation is<br />
needed for GPs at undergra<strong>du</strong>ate and<br />
postgra<strong>du</strong>ate levels as well as continued<br />
professional development (CPD).<br />
Specific communication skills on smoking<br />
cessation should be integrated into GPs’<br />
e<strong>du</strong>cation and training programmes.<br />
74<br />
2. Participation of GPs<br />
in research projects such as<br />
clinical research trials and<br />
observational studies on<br />
smoking cessation should<br />
be promoted.<br />
3. All health professionals<br />
who smoke should<br />
be supported to stop<br />
smoking.<br />
Ressources<br />
4. GPs should be<br />
provided with<br />
comprehensive information<br />
on available evidencebased<br />
cessation services<br />
including type of service, location, referral<br />
proce<strong>du</strong>res, cost and contact detail.<br />
5. External cessation services should<br />
provide regular feedback to GPs on patient<br />
cessation outco.<br />
6. GPs should routinely record and<br />
monitor the smoking status of all their<br />
patients and should record their subsequent<br />
actions in an integrated routine record<br />
system.
7. Simple recording systems on<br />
smoking cessation interventions should be<br />
incorporated into existing information<br />
systems. This should include smoking<br />
status, cessation activity and feedback.<br />
8. Administrative obligations of GPs<br />
should be reviewed in the wider<br />
framework to save time for prevention<br />
activities.<br />
Policy Framework<br />
9. Extra resources for reimbursement<br />
for specified smoking cessation<br />
interventions should be included in the<br />
normal GP payment system;<br />
10. GPs should play a central role in<br />
the formulation of evidence-based clinical<br />
guidelines on smoking cessation.<br />
11. Smoke free policies should be<br />
established and enforced in GPs’ working<br />
environment.<br />
Communication<br />
12. Smoking behaviour among GPs<br />
and other health professionals should be<br />
monitored regularly.<br />
13. To re<strong>du</strong>ce the perceived lack of<br />
acceptance of smoking cessation advice<br />
interventions, the general population<br />
awareness of GPs as a point of contact for<br />
smoking cessation services should be<br />
increased.<br />
14. GPs’ awareness of the importance<br />
of smoking prevention and cessation for<br />
the health of the general population has<br />
to be fostered.<br />
15. GP’s and GP’s associations must<br />
not enter into collaboration of any sort<br />
with the tobacco in<strong>du</strong>stry.<br />
Conclusion<br />
The European Consensus<br />
Project partners have come to the<br />
conclusion that while we can agree on<br />
common objectives and efficient solutions<br />
that will lead to a better integration of<br />
General Practitioners in the overall effort<br />
to re<strong>du</strong>ce tobacco consumption in Europe,<br />
the implementation and timing of<br />
activities must take place on a national<br />
level. General Practitioners’ role and<br />
activities must be integrated into the<br />
cultural environment, the legislative<br />
framework, the different health systems<br />
and according to the available financial<br />
resources of each country.<br />
In the long term, by letting each country<br />
evolve indivi<strong>du</strong>ally towards a common<br />
objective at their own pace, we will<br />
succeed in integrating prevention into our<br />
health care systems to the greatest benefit<br />
of the citizens of Europe. ■<br />
Policy makers, researchers, public health specialists, economists as well as<br />
representatives from GP organisations and health professional associations collaborated<br />
at the development of the evidence based policy recommendations and practice oriented<br />
implementation strategies.<br />
At an expert workshop on 10th December 2007 in Warsaw, the fifteen policy<br />
recommendations mentioned above were elaborated by 33 experts from 18 countries<br />
based on the scientific evidence collected in the project. At a stakeholder conference in<br />
Barcelona on 27-28 March 2008, 96 Stakeholders from 23 countries (including<br />
participants from the United States, Brazil and Uruguay) pooled their knowledge and<br />
experience and suggested a catalogue of measures to support the implementation of the<br />
PESCE policy recommendations.<br />
We would like to take this opportunity to thank all those who contributed with their<br />
knowledge and experience to the successful outcome of the PESCE project, especially<br />
Pierre Fabre Laboratories for its partnership with Tabac & Liberté since 1994.<br />
75 Program Pesce - Jean Daver
Pesce Project Partners<br />
Project Leader :<br />
-Dr Jean Daver, President, Tabac & Liberté, France<br />
Project Coordination :<br />
-Ms. Sibylle Fleitmann, Independent Consultant Tobacco Control,<br />
Germany – Project co-ordinator<br />
-Ms. Antonella Cardone, Consultant on Social and Public Health<br />
Issues, Italy – Financial co-ordination<br />
-Ms. Marie-Hélène Weber, Pierre Fabre European Affairs, France –<br />
Logistics<br />
Associated Project Partners :<br />
-Dr. Tibor Baska, Comenius University Jessenius Faculty of<br />
Medicine, Slovakia<br />
-Dr. Carmen Cabezas Peña , Health Department of the<br />
Autonomous Department of Catalonia, Spain<br />
-Prof. Luke Clancy, The Research Institute For a Tobacco Free<br />
Society (RIFTS), Ireland<br />
-Prof. David Cohen, School of Care Sciences, University of<br />
Glamorgan, Wales<br />
-Dr. Tibor Demjen, Smoking or Health Hungarian Foundation,<br />
Hungary<br />
-Dr. Evangelos Filopoulos, Hellenic Cancer Society, Greece<br />
-Dr. Giovanni Invernizzi, Italian School of General Medicine<br />
(SIMG), Italy<br />
-Dr. Annelies Jacobs, Radboud University Medical Centre, Centre<br />
for Quality of Care Research (WOK), The Netherlands<br />
-Prof. Ulrich John and Dr. Sabina Ulbricht, University of Greifswald,<br />
Germany<br />
-Ms. Martine Stead, Centre for Tobacco Control Research,<br />
University of Stirling & the Open University, Scotland<br />
-Dr. Hans Storm, Danish Cancer Society, Denmark<br />
-Ms. Ann Van den Bruel, Katolieke Universiteit Leuven (KUL),<br />
Belgium<br />
-Prof. Dr. Antonio Vaz Carneiro, Faculty of Medicine, University of<br />
Lisbon, Portugal<br />
-Prof. Witold Zatonski and Ms. Marta Porêbiak , Health Promotion<br />
Foundation, Poland<br />
Collaborating Project Partners :<br />
-Prof. Olaf Aasland, Institute of Health Management and Health<br />
Economics, Norway<br />
-Dr. Andi Aristotelous, Ministry of Health, Cyprus<br />
-Dr. Michael Callens, Mutualité Chrétienne de Belgique, Belgium<br />
-Dr. Janis Caunitis, Health Promotion State Agency, Latvia<br />
-Dr. Jacques Cornuz, Swiss Smoking Cessation Network,<br />
Switzerland<br />
-Dr. Eirik Boe Larsen, European Union of General Practitioners<br />
(UEMO), Belgium<br />
-Dr. George Kotarov, National Centre of Public Health Protection,<br />
Bulgaria<br />
-Dr. Eva Kralikova, Institute of Hygiene and Epidemiology Charles<br />
University, Czech Republic<br />
-Dr. Wilfried Kunstmann, Bundesärztekammer, Germany<br />
-Mr. Francis Grogna, European Network for Smoking Prevention,<br />
Belgiu<br />
-Prof. Florin Mihaltan, Institute of Pneumology "M.Nasta",<br />
Romania<br />
-Dr. Vera-Kerstin Petric, Ministry of Health, Health and Healthy<br />
Lifestyle Promotion Sector, Slovenia<br />
-Ms. Christina Dietscher, Ludwig Boltzmann Institute for Sociology<br />
of Health and Medicine, Austria<br />
-Mr. Patrick Sandström, National Public Health Institute KTL,<br />
Finland<br />
-Prof. Hanne Tonnesen, Bispebjerg University Hospital, WHO-<br />
Collaborating Centre for Evidence Based Health Promotion in<br />
Hospitals and Health Services, Denmark<br />
-Dr. Aurelijus Veryga, Kaunas University of Medicine, Lithuania<br />
Researchers :<br />
-Dr. Joao Costa, Faculty of Medicine, University of Lisbon, Portugal<br />
-Dr. Peter Csepe, Smoking or Health Hungarian Foundation,<br />
Hungary<br />
-Laura Currie, The Research Institute For a Tobacco Free Society<br />
(RIFTS), Ireland<br />
-Ms. Inge Haunstrup-Clemmensen, Danish Cancer Society,<br />
Denmark<br />
-Ms. Helena Koprivnikar, National Institute of Public Health,<br />
Slovenia<br />
-Ms. Sophie Massin, CES-MATISSE, Université Paris 1, Maison des<br />
Sciences Economiques, France<br />
-Dr. Ivo Nagels, Fondation contre le Cancer, Belgium<br />
-Ms. Maria Pilali, Hellenic Cancer Society, Greece<br />
-Dr. Nicolo Seminara, European School of General Medicine<br />
(SEMG), Italy<br />
-Ms. Kathryn Angus, Gayle Tait and Ingrid Holme, Centre for<br />
Tobacco Control Research, University of Stirling & the Open<br />
University, Scotland<br />
-Dr. Fasihul Alam, Dr. Paul Jarvis and Dr. Sam Groves, Health<br />
Economics and Policy Research Unit, University of Glamorgan,<br />
Wales<br />
-Ms. Lotje Van Esch, Radboud University Medical Centre, Centre<br />
for Quality of Care Research (WOK), The Netherlands<br />
-Dr. Dewi Segaar, STIVORO, The Netherlands<br />
Experts :<br />
-Dr. Francisco Camarelles, Spanish Society of Family Medicine,<br />
Spain<br />
-Dr. Dongbo Fu, World Health Organization (WHO), Switzerland<br />
-Prof. Pierre Kopp, Université Paris 1 - Panthéon - Sorbonne,<br />
France<br />
-Ms. Jennifer Percival, Royal College of Nursing, UK<br />
-Dr. Luis Rebelo, Faculty of Medicine, University of Lisbon,<br />
Portugal<br />
-Dr. Annie Sasco, INSERM, France<br />
-Mr. Kriztof Prezwosniak, Cancer Centre Institute, Poland<br />
-Prof. Joy Townsend, London School of Hygiene and Tropical<br />
Medicine, UK<br />
Funding Bodies :<br />
-European Commission, DG SANCO, Public Health Programme,<br />
Luxemburg<br />
-Ministry of Foreign Affaires, France<br />
-Mission Interministérielle de Lutte contre les Drogues et la<br />
Toxicomanie (MILDT), France<br />
-Institut National <strong>du</strong> Cancer (INCa), France<br />
-Cancer Research UK (CRUK), UK<br />
-Pierre Fabre Laboratories, France<br />
76