Clinical characteristics of asthma combined with COPD feature.

Yonsei Med J · 2014 · PMC4075403 · PMID 24954327

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Its prevalence reports recently estimated that about 13-20% of subjects with COPD have the overlap phenotype, with an increasing trend in the elderly population. 1 , 2 , 3 , 4 Physiological ageing of the lung is associated with a decrease in the static elastic recoil, a decrease in compliance of the chest wall, and a decrease in the strength of respiratory muscles.

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