4、Vigorouscoughcanreachairwaypressuremorethan100cmH2Obutrarelycausebarotrauma25-30 cm H2O的压力也可引起明显的肺损伤Respiratory&CriticalCareMedicineIt’snotpressure,butVolume?Respiratory&CriticalCareMedicinePIP:42cmH2OVt:25-35ml/kg渗透性肺水肿负压通气Vt:25-35ml/kgPIP:42cmH2OVt:10-15ml/kg无明显肺水肿-Dreyfuss,etal.1988Respirat