慢性阻塞性肺疾病(COPD)是一种重要的慢性呼吸系统疾病,患病人数多,病死率高。由于 COPD 呈缓慢进行性发展,严重影响患者的劳动能力和生活质量。目前 COPD 在全球已成为第4位致死原因,引起了世界各国的重视。一、定义COPD 是一种可以预防、可以治疗的疾病状态,以不完全可逆的气流受限为特点。气流受限常呈进行性加重,并且多与肺部对有害颗粒或气体、主要是吸类的异常炎症反应有 Chronic Obstructive Pulmonary Disease (COPD) is an important chronic respiratory disease with a high prevalence and high mortality. Due to the slow and progressive development of COPD, the patient’s ability to work and the quality of life are seriously affected. At present, COPD has become the fourth cause of death in the world, arousing the attention of all countries in the world. First, the definition of COPD is a preventable, treatable disease state, characterized by incompletely reversible airflow limitation. Restrictive airflow limitation is often progressive increase, and more with the lungs of harmful particles or gases, mainly Absorption abnormal inflammatory response