慢性支气管炎,俗称“老慢支”,以老年人多见,是一种呼吸系统的常见病和多发病。尤其在寒冷季节,易反复急性发作。若不积极预防和治疗,病情进展,常可并发阻塞性肺气肿,甚至发展成慢性肺原性心脏病,发病率达 Chronic bronchitis, commonly known as “old chronic bronchitis”, is more common in the elderly and is a common and frequently occurring respiratory system. Especially in the cold season, easy to repeated acute attack. If not actively prevent and treat the disease progression, often complicated by obstructive pulmonary emphysema, and even the development of chronic pulmonary heart disease, the incidence of up to