综述治疗急性呼吸窘迫综合征患者时 ,使用呼气末正压的理论基础 ,选择最佳呼气末正压的方法以及这些方法的生理学和临床意义。提出选择最佳PEEP的最新观点和需要解决的问题 This review summarizes the rationale for using positive end expiratory pressure in the treatment of patients with acute respiratory distress syndrome, the method of choice for optimal positive end expiratory pressure, and the physiological and clinical implications of these methods. Put forward the latest PEEP choice and the need to solve the problem