Abstract:
BACKGROUND:The presence of non-reversible airway obstruction (AO) in never smokers has only received limited attention until now. METHODS:We analyzed data from the Austrian Burden of Obstructive Lung Disease (BOLD) study. We defined non-reversible AO as post-bronchodilator FEV(1)/FVC <0.7 which corresponds to COPD I and higher (COPD I+) according to current GOLD guidelines. Significant AO was defined as FEV(1)/FVC <0.7 and FEV(1) <80% predicted (GOLD II and higher, GOLD II+). The prevalence and characteristics of non-reversible AO in never smokers were analyzed in relation to the severity of the disease. RESULTS:Never smokers comprised 47.3% of the study population. Non-reversible AO was seen in 18.2% of never smokers, and 5.5% of never smokers fulfilled criteria for significant non-reversible AO (GOLD stage II+). Therefore, the resulting population prevalence of significant non-reversible AO (GOLD stage II+) was 2.6%. Never smokers with non-reversible AO were predominantly female and slightly older. The airway obstruction was found to be less severe as compared with ever smokers. Despite this, 20% of never smokers with significant non-reversible AO (GOLD stage II+) reported respiratory symptoms and 50% reported impairment of quality of life. This burden of illness in never smokers was similar to that in smokers when severity of AO was taken into account. CONCLUSION:Approximately every third subject with non-reversible AO has never smoked, yet still demonstrates a substantial burden of symptoms and impairment of quality of life. Never smokers should receive far greater attention when efforts are undertaken to prevent and treat chronic airway obstruction.
journal_name
Respir Medjournal_title
Respiratory medicineauthors
Lamprecht B,Schirnhofer L,Kaiser B,Buist S,Studnicka Mdoi
10.1016/j.rmed.2008.07.007subject
Has Abstractpub_date
2008-12-01 00:00:00pages
1833-8issue
12eissn
0954-6111issn
1532-3064pii
S0954-6111(08)00249-7journal_volume
102pub_type
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