Different therapeutic responses in chronic obstructive pulmonary disease subgroups

作者：Lee J S; Huh J W; Chae E J; Seo J B; Ra S W; Lee J H; Kim E K; Lee Y K; Kim T H; Kim W J; Lee J H; Lee S M; Lee S; Lim S Y; Shin T R; Yoon H I; Sheen S S; Oh Y M^*; Lee S D

来源：International Journal of Tuberculosis and Lung Disease, 2011, 15(8): 1104-1110.

DOI：10.5588/ijtld.10.0553

• COPD
• diffusing capacity
• emphysema
• lung volume

SETTING: Eleven referring hospitals in South Korea.
OBJECTIVE: To compare therapeutic responses in chronic obstructive pulmonary disease (COPD) subgroups, classified by diffusing capacity of the lung for carbon monoxide (DL(CO)) and lung volume.
DESIGN: A total of 130 stable male COPD patients were classified into four subgroups according to baseline DL(CO) and residual volume/total lung capacity (RV/TLC) ratio. We compared therapeutic responses to short acting beta(2)-agonist (SABA) and 3-month combined inhalation of long-acting beta(2)-agonist (LABA) and corticosteroid among patients with these subgroups.
RESULTS: Among the 130 COPD patients, 41 (31.5%) had normal DL(CO) and RV/TLC, 28 (21.5%) low DL(CO) and normal RV/TLC, 31 (23.8%) normal DL(CO) and high RV/TLC, and 30 (23.1%) low DL(CO) and high RV/TLC. The normal DL(CO)/high RV/TLC subgroup showed a significantly larger flow response (changes in forced expiratory volume in 1 s) to salbutamol than the normal DL(CO)/RV/TLC subgroups, and a larger volume response (changes in forced vital capacity) than the two normal RV/TLC subgroups. The normal DL(CO)/high RV/TLC subgroup also showed significantly larger flow and volume response to 3-month combined inhalation of LABA and corticosteroid than the two normal RV/TLC subgroups.
CONCLUSION: COPD subgroups classified by DLco and RV/TLC may have different pulmonary function responses to pharmacological treatment.

• 出版日期2011-8