呼吸衰竭是儿科危重症中最常见的致死原因，我院PICU自1991年以来应用机械通气抢救急性呼吸衰竭68例，有效提高了临床抢救成功率。临床资料一、一般资料68例均为1991年以来经我院PICU抢救治疗的急性呼吸衰竭患儿（诊断标准参照第6版实用儿科学呼衰章节）。男39例，女29例；年龄 Respiratory failure is the most common cause of death in pediatric critical illness, PICU in our hospital since 1991, mechanical ventilation to rescue 68 cases of acute respiratory failure, effectively improving the success rate of clinical rescue. Clinical data First, the general information of 68 cases are from 1991 to our hospital PICU rescue treatment of children with acute respiratory failure (diagnostic criteria refer to the sixth edition of Practical Pediatric respiratory failure section). 39 males and 29 females; age