毛细支气管炎是儿科疾病中一种常见的下呼吸道感染性疾病,由多种病毒感染引起,临床上以呼吸道合胞病毒(RSV)感染最为常见,以2岁以内婴幼儿发病多见[1]。常表现为咳嗽、喘憋、气促、发绀及三凹征。严重者可导致意识障碍、呼吸、循环衰竭而危及生命,为儿科常见急重症,因此越来越受到儿科医师的重视,对毛细支气管炎临床治疗途径的研究也越来越 Bronchiolitis is a common lower respiratory tract infection in pediatric diseases. It is caused by a variety of viral infections and is most commonly reported as respiratory syncytial virus (RSV) in the clinic. Infants and young children up to 2 years of age are more common (1) . Often manifested as cough, wheezing, shortness of breath, cyanosis and three concave sign. Serious cases can lead to disturbance of consciousness, respiration, circulatory failure and life-threatening, which is a common critical illness in pediatrics. Therefore, it is getting more and more attention from pediatricians and the research on the clinical treatment of bronchiolitis is getting more and more