Lung function decline in relation to diagnostic criteria for airflow obstruction in respiratory symptomatic subjects

Contains fulltext : 108583.pdf (publisher's version ) (Open Access)BACKGROUND: Current COPD guidelines advocate a fixed < 0.70 FEV1/FVC cutpoint to define airflow obstruction. We compared rate of lung function decline in respiratory symptomatic 40+ subjects who were 'obstructive' or 'non-obstructive' according to the fixed and/or age and gender specific lower limit of normal (LLN) FEV1/FVC cutpoints. METHODS: We studied 3,324 respiratory symptomatic subjects referred to primary care diagnostic centres for spirometry. The cohort was subdivided into four categories based on presence or absence of obstruction according to the fixed and LLN FEV1/FVC cutpoints. Postbronchodilator FEV1 decline served as primary outcome to compare subjects between the respective categories. RESULTS: 918 subjects were obstructive according to the fixed FEV1/FVC cutpoint; 389 (42%) of them were non-obstructive according to the LLN cutpoint. In smokers, postbronchodilator FEV1 decline was 21 (SE 3) ml/year in those non-obstructive according to both cutpoints, 21 (7) ml/year in those obstructive according to the fixed but not according to the LLN cutpoint, and 50 (5) ml/year in those obstructive according to both cutpoints (p = 0.004). CONCLUSION: This study showed that respiratory symptomatic 40+ smokers and non-smokers who show FEV1/FVC values below the fixed 0.70 cutpoint but above their age/gender specific LLN value did not show accelerated FEV1 decline, in contrast with those showing FEV1/FVC values below their LLN cutpoint

OddTalks: ontwerpen op het grensgebied van kunst en wetenschap

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Odd Talks: Kleding met zonnencellen en zelf Super Mario worden

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NOP20x20: Een avond vol creatieve ideeën, gepassioneerde sprekers en een traan

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Asthma education tailored to individual patient needs can optimise partnerships in asthma self-management.

Item does not contain fulltextThis paper studies the effects of patient education, tailored to individual needs of patients as part of an asthma self-management program. A tailored education program was designed which took into account individual information needs of patients by using a feedback instrument. Totally 98 steroid dependent asthmatics entered the tailored education program, 95 patients received usual care. Outcome measures were information exchanged and patient satisfaction. Study duration was 6 months. Patients in the tailored education group showed a significant reduction in information need (P=0.005). Patient satisfaction increased from 87.9 to 93.7 in this group while this did not change in the usual care group (P=0.000). Use of this tailored education program improved the GP-patient interaction within the context of a clinically effective asthma self-management program. Findings from this study may be applicable to other chronic conditions as well