Implications of Emphysema and Lung Function for the Development of Pneumonia in Patients with Chronic Obstructive Pulmonary Disease

Tuberculosis and Respiratory Diseases

article

Yoonki Hong¹  Jae Seung Lee²  Kwang Ha Yoo³  Ji-Hyun Lee⁴  Woo Jin Kim¹  Seong Yong Lim⁵  Chin Kook Rhee⁶  Sang-Do Lee²  Yeon-Mok Oh² 

[1] Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University College of Medicine;Department of Pulmonary and Critical Care Medicine and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine;Department of Internal Medicine, Konkuk University School of Medicine;Department of Internal Medicine, CHA Bundang Medical Center, CHA University;Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine;Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea

关键词: Pulmonary Disease;    Chronic Obstructive;    Emphysema;    Pneumonia;    Tomography;    X-Ray Computed;    Risk Factors;   

DOI  :  10.4046/trd.2016.79.2.91

学科分类：医学（综合）

来源: The Korean Academy of Tuberculosis and Respiratory Diseases

【 摘 要 】

Background Chronic obstructive pulmonary disease (COPD) is sometimes complicated with pneumonia, but little is known about the risk factors that promote the development of pneumonia in COPD. These risk factors were evaluated in the present study. Methods The data of 324 patients with COPD from a prospective multi-center observational cohort with obstructive lung disease were evaluated retrospectively. To identify risk factors for the development of pneumonia in COPD, the clinical and radiological data at enrollment and the time to the first episode of pneumonia were analyzed by Cox proportional hazard analysis. Results The median follow-up time was 1,099 days and 28 patients (8.6%) developed pneumonia. The Cox analysis showed that post-bronchodilator forced expiratory volume in one second (FEV 1 , % of predicted) and the computed tomography (CT) emphysema extent (inspiratory V950) were independent risk factors for the development of pneumonia (post-bronchodilator FEV 1 : hazard ratio [HR], 0.97; 95% confidence interval [CI], 0.94-1.00; p=0.048 and inspiratory V950: HR, 1.04; 95% CI, 1.01-1.07; p=0.01). Conclusion Emphysema severity measured by CT and post-bronchodilator FEV1 are important risk factors for the development of pneumonia in COPD.

【 授权许可】

CC BY-NC