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British Guideline on the MAnAGeMent of AsthMA 14 Table 5: Clinical features in adults that influence the probability that episodic respiratory symptoms are due to asthma features that increase the probability of asthma More than one of the following symptoms: wheeze, breathlessness, chest tightness and cough, particularly if: ◊ symptoms worse at night and in the early morning ◊ symptoms in response to exercise, allergen exposure and cold air ◊ symptoms after taking aspirin or beta blockers History of atopic disorder Family history of asthma and/or atopic disorder Widespread wheeze heard on auscultation of the chest Otherwise unexplained low FEv or PEF (historical or serial readings) 1 Otherwise unexplained peripheral blood eosinophilia features that lower the probability of asthma Prominent dizziness, light-headedness, peripheral tingling Chronic productive cough in the absence of wheeze or breathlessness Repeatedly normal physical examination of chest when symptomatic voice disturbance Symptoms with colds only Significant smoking history (ie >20 pack-years) Cardiac disease Normal PEF or spirometry when symptomatic* * A normal spirogram/spirometry when not symptomatic does not exclude the diagnosis of asthma. Repeated measurements of lung function are often more informative than a single assessment. ; Base initial diagnosis on a careful assessment of symptoms and a measure of airflow obstruction: in patients with a high probability of asthma move straight to a trial of treatment. Reserve further testing for those whose response to a trial of treatment is poor. in patients with a low probability of asthma, whose symptoms are thought to be due to an alternative diagnosis, investigate and manage accordingly. Reconsider the diagnosis of asthma in those who do not respond. the preferred approach in patients with an intermediate probability of having asthma is to carry out further investigations, including an explicit trial of treatments for a specified period, before confirming a diagnosis and establishing maintenance treatment. d Spirometry is the preferred initial test to assess the presence and severity of airflow obstruction.
2.4.1 FURTHER INvESTIGATION OF PATIENTS WITH AN INTERMEDIATE PROBABILITy OF ASTHMA Patients with airways obstruction Tests of peak expiratory flow variability, lung volumes, gas transfer, airway hyper-responsiveness and airway inflammation are of limited value in discriminating patients with established airflow obstruction due to asthma from those whose airflow obstruction is due to other conditions. 73- 76 Patients may have more than one cause of airflow obstruction, which complicates the interpretation of any test. In particular, asthma and chronic obstructive pulmonary disease (COPD) commonly coexist. ; Offer patients with airways obstruction and intermediate probability of asthma a reversibility test and/or a trial of treatment for a specified period: if there is significant reversibility, or if a treatment trial is clearly beneficial treat as asthma if there is insignificant reversibility and a treatment trial is not beneficial, consider tests for alternative conditions.* Patients without airways obstruction In patients with a normal or near-normal spirogram it is more useful to look for evidence of airway hyper-responsiveness and/or airway inflammation 71,77-79 These tests are sensitive so normal results provide the strongest evidence against a diagnosis of asthma. ; In patients without evidence of airways obstruction and with an intermediate probability of asthma, arrange further investigations* before commencing treatment. * see section 2.5 for more detailed information on further tests 2 diAGnosis 15
Page 1 and 2: 101 British Guideline on the Manage
Page 3 and 4: British Thoracic Society Scottish I
Page 5 and 6: Revised 2011 Revised 2011 Revised 2
Page 7 and 8: 1 introduction 1.1 the need for A G
Page 9 and 10: 1.3.1 PATIENT vERSION Patient versi
Page 11 and 12: Table 1: Clinical features that inc
Page 13 and 14: Case detection studies have used sy
Page 15 and 16: 2.1.6 CHILDREN WITH AN INTERMEDIATE
Page 17 and 18: 2.3 suMMAry focus the initial asses
Page 19: 2.4 diAGnosis in Adults The diagnos
Page 23 and 24: Table 6: Differential diagnosis of
Page 25 and 26: 2.5.1 TREATMENT TRIALS AND REvERSIB
Page 27 and 28: A small prospective observational s
Page 29 and 30: Table 8: Summary of tools that can
Page 31 and 32: Measurement Methodology Asthma Cont
Page 33 and 34: Measurement Methodology Eosinophil
Page 35 and 36: 3.1.2 FOOD ALLERGEN AvOIDANCE Sensi
Page 37 and 38: The limited data on antenatal or ea
Page 39 and 40: 3.3.2 AIR POLLUTION Challenge studi
Page 41 and 42: 3.5 CoMPleMentAry And AlternAtive M
Page 43 and 44: Revised 2011 4 Pharmacological mana
Page 45 and 46: Table 8b: Equivalent doses of inhal
Page 47 and 48: 4.2.3 SAFETy OF INHALED STEROIDS Th
Page 49 and 50: 4.3.2 ADD-ON THERAPy Options for ad
Page 51 and 52: 4.4 steP 4: Poor Control on ModerAt
Page 53 and 54: 4 PhArMAColoGiCAl MAnAGeMent Colchi
Page 55 and 56: MOVE UP TO IMPROVE CONTROL AS NEEDE
Page 57 and 58: 4.6 stePPinG doWn Stepping down the
Page 59 and 60: 4.7.5 ASPIRIN-INTOLERANT ASTHMA The
Page 61 and 62: 5.3 inhAled steroids for stABle Ast
Page 63 and 64: Revised 2009 6 Management of acute
Page 65 and 66: Patients with brittle or difficult
Page 67 and 68: Table 11: Initial assessment - the
Page 69 and 70: In acute asthma without life threat
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6.3.8 ANTIBIOTICS 6.3.9 HELIOx When
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6.6.2 PATIENT EDUCATION Following d
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6.7.2 PULSE OxIMETRy 6.7.3 PEF Accu
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Frequent doses up to every 20-30 mi
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6.9.3 Iv MAGNESIUM SULPHATE Intrave
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New 2011 7 special situations 7.1 A
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Gender During adolescence there is
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Complementary and alternative medic
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Table 13: Recommendations for organ
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7.2 diffiCult AsthMA 7.2.1 DEFINING
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Revised 2009 Controlled studies usi
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Continuous fetal monitoring should
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C use steroid tablets as normal whe
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7.9.2 AT-RISK POPULATIONS Several h
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7.9.6 SPECIFIC BRONCHIAL PROvOCATIO
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Asthma clinics in primary care may
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A 8.3 Audit discharge from hospital
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9 Patient education and self manage
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9.2.1 COMPLIANCE WITH MONITORING AN
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Table 15. Summary of the key compon
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8. What role does patient preferenc
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Dr James Paton* Reader and Honorary
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INHALER DEvICES Dr John White (Chai
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11.4 disseMinAtion GrouP Mrs Sheila
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Abbreviations ABG arterial blood ga
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Annex 2 Management of acute severe
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Annex 4 Features of acute severe as
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Annex 6 Consider prednisolone 20 mg
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Annex 8 Management of acute asthma
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Annex 10 PEF (l/min) EU Scale 680 6
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Annex 11 (contd) Annexes 125
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56. Abu-Hasan M, Tannous B, Weinber
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156. Lodrup Carlsen KC, Carlsen KH,
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256. Malmstrom M, Ahlner J, Carlsso
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352. Brocklebank D, Ram F, Wright J
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456. McDowell KM, Chatburn RL, Myer
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562. McDonald JC, Keynes HL, Meredi
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668. Enright PL, McClelland RL, New
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767. Berger W. Budesonide inhalatio
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862. Pedroletti C, Lundahl J, Alvin
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ISBN 978 1 905813 28 5 British Thor
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