GROUP1(机械通气≤ 14天)纳入42例患者,GROUP2(机械通气& gt .14天)纳入61例患者。F/Vt、IWI(Cst,rs呼吸系统静态顺应性)× SaO2 / [ f/Vt ]、MIP、P0.1、P0.1 / MIP、f/Vt × P0.1、TIE:MIP/corresponding time to achieve it during 60 seconds of observation。停用呼吸机后自主呼吸能够维持48小时以上。停用呼吸机后出现以下情况:FiO2 & gt ......