慢性支气管炎、哮喘、肺气肿和慢性肺原性心脏病,都是世界各地的常见病、多发病,许多国家把这几种病作为一组进行性呼吸系疾病来看待,统称为慢性阻塞性肺部疾病(简称 COPD)。这组疾病虽然可能在年轻时就有发生,但患者很少在40岁以前出现症状。 Chronic bronchitis, asthma, emphysema and chronic pulmonary heart disease are common and frequently occurring diseases in many parts of the world. Many countries consider these diseases as a group of progressive respiratory diseases, collectively referred to as chronic obstruction Sexual lung disease (referred to as COPD). Although this group of diseases may occur at a young age, patients rarely develop symptoms before age 40.