支气管扩张是一种由多种病因引起的消耗性疾病,表现为慢性咳嗽和反复急性发作。支气管扩张有三个病理特点即气道感染、气道炎症和酶的活动。这三者相互作用,引起气道的慢性损伤。许多支气管扩张患者的气道内可能隐藏着铜绿假单孢菌(PA),其发病率很高。大量有害的中性粒细胞被炎 Bronchiectasis is a wasting disease caused by a variety of causes, manifested as chronic cough and recurrent acute attacks. Bronchodilation has three pathological features of airway infection, airway inflammation and enzyme activity. These three interactions, causing chronic airway damage. Many patients with bronchiectasis in the airway may be hidden Pseudomonas aeruginosa (PA), the incidence is high. A large number of harmful neutrophils are inflammation