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Changes in lung function according to disease extent before and after pulmonary tuberculosis
DESIGN: Using a retrospective cohort design, changes in and predictors of lung function were evaluated.
RESULTS: A total of 41 patients were included in the final analysis. The median decline in annualised forced expiratory volume in 1 sec (FEV1) was 180.0 ml/year (95%CI 118.9–356.1) in advanced PTB and 94.7 ml/year (95%CI 33.4–147.3) in localised PTB (ΔFEV1 % predicted/year 9.4%, 95%CI 4.4–14.0 vs. 3.8%, 95%CI 1.8–6.2). The median decline in annualised forced vital capacity (FVC) was 309.6 ml/year (95%CI 137.0–359.0) in advanced PTB and 101.1 ml/year (95%CI 30.3–219.6) in localised PTB (ΔFVC % predicted/year 7.3%, 95%CI 5.3–12.3 vs. 2.9%, 95%CI 0.9–6.5).
CONCLUSIONS: As the sample size of our study was small, the conclusions could be biased. Nevertheless, our findings show that PTB causes a significant decline in lung function even in localised PTB, whereas advanced PTB was associated with excessive or even higher decline. This study suggests that early diagnosis and treatment of PTB is needed to preserve lung function.
Keywords: Mycobacterium tuberculosis; impairment; lung function decline; pulmonary function
Document Type: Research Article
Affiliations: 1: *Department of Pulmonary and Critical Care Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, †Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, 2: †Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, 3: ‡Division of Pulmonary Medicine, CHA University School of Medicine, Gumi CHA Hospital, Gumi, 4: §Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Dankook University Hospital, Cheonan, 5: ¶Department of Radiology, and 6: #Department of Pharmacology and Pharmaco Genomics Research Center, Inje University College of Medicine, Busan, Republic of Korea
Publication date: 01 May 2015
The International Journal of Tuberculosis and Lung Disease (IJTLD) is for clinical research and epidemiological studies on lung health, including articles on TB, TB-HIV and respiratory diseases such as COVID-19, asthma, COPD, child lung health and the hazards of tobacco and air pollution. Individuals and institutes can subscribe to the IJTLD online or in print – simply email us at [email protected] for details.
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