smoking cessation affects the natural history of copd

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ID: 224228
2017
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Abstract
Jiu-Wu Bai,1 Xiao-xin Chen,2 Shengsheng Liu,3 Li Yu,1 Jin-Fu Xu11Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 2Department of Respiratory Medicine, Second Peoples Hospital of Nantong, Nantong, Jiangsu Province, 3Department of Tuberculosis, Anhui Chest Hospital, Hefei, Anhui Province, People’s Republic of China Background: Cigarette smoking is the most commonly encountered and readily identifiable risk factor for COPD. However, it is not clear which quantitative factors related to smoking influence the prognosis of COPD patients.Methods: A total of 204 patients with a long-term history of smoking were enrolled into this study and followed up for 5 years. Patients were divided into “death” or “survival” groups based on follow-up results and “quitting-smoking” or “continuing-smoking” groups based on whether they gave up smoking.Results: Patients in the death group had a longer smoking time, lower prevalence of quitting smoking, later onset of COPD symptoms, older age at quitting smoking, lower forced expiratory volume in one second (FEV1) % predicted, and lower ratio of FEV1/forced vital capacity. Age, age at quitting smoking, and FEV1% predicted were independently associated with mortality from COPD. Compared to the continuing-smoking group, the quitting-smoking group had a lower mortality rate, longer course of COPD, earlier onset of COPD symptoms, and lower residual volume percent predicted. During the 5-year follow-up, 113 deaths were recorded (quitting-smoking group: n=92; 40 deaths; continuing-smoking group: n=112; 73 deaths). The mortality risk remained significantly higher in the continuing-smoking group than the quitting-smoking group (log-rank test, 13.59; P=0.0002).Conclusion: Smoking time may be related to the mortality rate from COPD. Smoking cessation has the greatest capacity to influence the natural history of COPD.Keywords: chronic obstructive pulmonary disease, cigarette smoking, smoking cessation
Reference Key
j2017internationalsmoking Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Bai J;Chen X;Liu S;Yu L;Xu JF
Journal tijdschrift voor geneeskunde
Year 2017
DOI
DOI not found
URL
https://www.dovepress.com/smoking-cessation-affects-the-natural-history-of-copd-peer-reviewed-article-COPD
Keywords
chronic obstructive pulmonary disease cigarette smoking smoking cessationdiseases of the respiratory system

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