6、gtoPEEPinagivenscope,buttheywoulddecreaseasPEEPwasabove15cmH2O.Conclusion:ThelargestDO2andtheleastsideeffectwereobtainedasPEEPrangedfrom10to15cmH2OduringventilativetreatmentforALI. 【Keyword】PEEP ALI DO2andVO2 急性肺损伤是以肺实质细胞损伤为主的急性呼吸衰竭综合征,表现为顽固性低氧血症。其治疗原则是纠正缺氧恢复氧供,目前主要的治疗手段是呼吸末正压通气(PE