Longitudinal Lung Volume Changes in Patients with Chronic Obstructive Pulmonary Disease

Title
Longitudinal Lung Volume Changes in Patients with Chronic Obstructive Pulmonary Disease
Author
김태형
Keywords
Chronic obstructive pulmonary disease; Spirometry; Lung volume measurements; Inspiratory capacity; Total lung capacity
Issue Date
2013-08
Publisher
SPRINGER VERLAG KG
Citation
Lung, Aug 2013, 191(4), P.405-412
Abstract
BackgroundThe progression of lung hyperinflation in patients with chronic obstructive pulmonary disease (COPD) has not been studied in a long-term prospective cohort. We explored the longitudinal changes in lung volume compartments with the aim of identifying predictors of a rapid decline of the inspiratory capacity to total lung capacity ratio (IC/TLC).MethodsThe study population comprised 324 patients with COPD who were recruited prospectively. Annual rates of changes in pulmonary function, including forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), total lung capacity (TLC), functional residual capacity (FRC), residual volume (RV), vital capacity (VC), IC, and IC/TLC, were estimated using the random coefficient models.ResultsThe mean annual rates of changes in pre- and post-bronchodilator FEV1 were ?23.0 mL/year (p < 0.001) and ?26.5 mL/year (p = 0.004). The mean annual rates of changes in VC, IC, TLC, and IC/TLC were ?33.7 mL/year (p = 0.007), ?53.9 mL/year (p < 0.001), ?43.7 mL/year (p = 0.012), and ?0.65 %/year (p = 0.001), respectively. RV, FRC, and RV/TLC did not change significantly during the study period. Multivariate logistic regression analysis showed that a high modified Medical Research Council (MMRC) dyspnea scale score, a high Charlson comorbidity index value, and low post-bronchodilator FEV1 were associated with rapid decline in IC/TLC.ConclusionMMRC dyspnea scale, post-bronchodilator FEV1, and the Charlson comorbidity index at baseline were independent predictors of a rapid decline in IC/TLC.
URI
https://link.springer.com/article/10.1007%2Fs00408-013-9478-0http://hdl.handle.net/20.500.11754/45504
ISSN
0341-2040
DOI
10.1007/s00408-013-9478-0
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COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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