Clinical Characteristics and Outcome of Patients With COPD With Pneumonia

To identify the clinical characteristics of patients with chronic obstructive pulmonary disease (COPD) combined with community-acquired pneumonia (CAP) and the factors influencing clinical transition.Compared to other chronic airway diseases, COPD patients can often have CAP in combination, but there is a lack of comparative studies between COPD patients with CAP and non-COPD patients with CAP.