急性毛细支气管炎(简称毛支)是婴幼儿时期常见的急性下呼吸道感染性疾病,多数由呼吸道合胞病毒(RSV)等呼吸道病毒感染引起,以咳嗽、喘憋、呼吸困难为主要临床表现。目前国内大多数学者认为本病无特异有效的治疗方法,并认为药物没有明显作用而推荐支持性治疗,但随着药物研究工作 Acute bronchiolitis (abbreviated as branch of hair) is a common acute respiratory tract infection in infants and young children, mostly caused by respiratory virus such as respiratory syncytial virus (RSV). Cough, wheezing and dyspnea are the main clinical manifestations. At present, most scholars believe that the disease is no specific and effective treatment, and that the drug has no obvious effect and recommended supportive treatment, but with the drug research work