經過三天抗生素治療,病人呼吸狀況並無起色,FiO2 調高至 80%, PaO2:62mmHg, SpO2:90%,追蹤之 CxR 顯示 bilateral diffuse infiltration。Bp: 89/49 mmHg, HR:142/min。Ventilator setting: Tidal volume 520 ml, PEEP 8 cmH2O, I:E ratio 1:2, respiratory rate 20/min