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5.2.12. Heart failure<br />

The association between heart failure and increase in DM 2 risk has been assessed<br />

(42) in 2,616 non-diabetic patients with coronary disease (myocardial infarction<br />

and stable angina).<br />

The subgroup with advanced heart failure (class III from NYHA) had a higher<br />

risk to develop diabetes [RR 1.7 (CI 95%: 1.1- 2.6)]; this was not the case for<br />

class II from NYHA. The study was initially not designed for this target group and<br />

neither did it consider the patients’ physical exercise.<br />

Cohort<br />

Studies<br />

2+<br />

5.2.13. Drugs<br />

Atypical antipsychotic drugs<br />

Some studies (43) suggest that patients with schizophrenia present a higher DM<br />

prevalence than the general population, though its cause has not been fully established.<br />

A review of 17 studies (44) states that the treatment with olanzapine and<br />

clozapine is associated with a higher risk to develop DM, in comparison to those<br />

patients who are not being treated or who receive treatment with classic antipsychotic<br />

drugs. It also concludes that more comparative studies are required among<br />

the different antipsychotic drugs.<br />

SR of<br />

different<br />

types<br />

of studies<br />

1+/3<br />

Diuretics and beta-blockers<br />

The HTA Clinical Practice Guideline from the National Institute for Clinical<br />

Excellence (NICE) states that there is a higher risk to develop diabetes when a<br />

combination of beta-blockers and thiazidic diuretics (45) is used.<br />

An SR (<strong>46</strong>) assessed the effect of the different types of antihypertensives in<br />

the incidence of DM, including very heterogeneous studies. It concluded that the<br />

ARBII blockers and ACE inhibitors were the antihypertensives less associated<br />

with diabetes, followed by calcium channel blockers and placebo , beta-blockers<br />

and diuretics.<br />

SR of RCT<br />

1 +<br />

Other drugs<br />

Other drugs (47) involved in the development of diabetes are: glucocorticoids,<br />

oral contraceptives, tacrolimus, cyclosporine, nicotinic acid, protease inhibitor<br />

antiretroviral agents, gonadotropin agonist hormones, clonidine and pentamidine.<br />

RCT,<br />

cohort,<br />

case series<br />

1+/2+/3<br />

40 CLINICAL PRACTICE GUIDELINES IN THE NHS

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