Comparisons of the characteristics of chronic obstructive pulmonary disease (COPD) and asthma-COPD overlap syndrome (ACOS) have been the focus of several studies since the diseases were defined by the Global Initiative for Asthma and Global Initiative for Chronic Obstructive Lung Disease guidelines. However, no consensus is available yet. In this study, we aimed to compare the characteristics of asthma-COPD overlap (ACO) and COPD.We retrospectively reviewed 1,504 patients with COPD in a Korean COPD Subtype Study cohort. The occurrence of ACO was defined as a positive response to a bronchodilator (an increase in forced expiratory volume in 1 second [FEV1] of 12

作者：Hye Jung, Park；Min Kwang, Byun；Hyung Jung, Kim；Chul Min, Ahn；Jin Hwa, Lee；Kyeong Cheol, Shin；Soo Taek, Uh；Seung Won, Ra；Kwang Ha, Yoo；Ki Suck, Jung

来源：Allergy, asthma & immunology research 2017 年 9卷 5期