毛细支气管炎(毛支)是婴幼儿时期最常见的急性下呼吸道疾病,大多由呼吸道合胞病毒感染引起,其次为副流感病毒、流感病毒、腺病毒和鼻病毒等,少数由肺炎支原体和细菌感染引起。临床常表现为发作性喘憋,解除呼吸道阻塞、改善通气、控制喘憋是提高毛支疗效的关键[1]。2006年6月-20 Bronchiolitis (bronchiolitis) is the most common childhood acute respiratory tract disease, mostly caused by respiratory syncytial virus infection, followed by parainfluenza virus, influenza virus, adenovirus and rhinovirus, a small number of Mycoplasma pneumoniae and bacteria Infection caused. Clinically often manifested as episodes of wheezing, relieve airway obstruction, improve ventilation, control wheezing is the key to improve the efficacy of hair branch [1]. June 2006 -20