A.PaO2≤55mmHg或SaO2≤88%,有高碳酸血癥者適用 B.PaO255mmHg~60mmHg或SaO2<89%,并有肺動(dòng)脈高壓者適用 C.吸氧時(shí)間10~15h/d D.氧流量為2~3L/min E.目的是使患者在靜息狀態(tài)下達(dá)到PaO2≥60mmHg和(或)SaO2升至90%
A.RV增高 B.VC降低 C.DLCO/VA降低 D.FEV1/FVC增高 E.RV/TLC明顯增高
A.輕度:FEV1/FVC< 70%,F(xiàn)EV1≥80%預(yù)計(jì)值B.中度:FEV1/FVC< 70%,50%≤FEV1< 80%預(yù)計(jì)值C.重度:FEV1/FVC< 70%,30%≤FEV1< 50%預(yù)計(jì)值D.極重度:FEV1/FVC< 70%,F(xiàn)EV1< 30%預(yù)計(jì)值E.極重度:FEV1< 70%預(yù)計(jì)值,伴慢性呼吸衰竭