A.25%~29% B.<50% C.>50% D.35%~40% E.100%
A.低氧血癥不伴有二氧化碳潴留 B.低氧血癥伴有二氧化碳潴留 C.僅有二氧化碳潴留 D.血?dú)夥治鎏崾綪aO250mmHg E.以上都不是
A.PaO2<8.6kPa(65mmHg)和(或)伴有PaCO2>7.3kPa(55mmHg) B.PaO2<6.7kPa(50mmHg)和(或)伴有PaCO2>8.0kPa(60mmHg) C.PaO2<8.0kPa(60mmHg)和(或)伴有PaCO2>7.3kPa(55mmHg) D.PaO2<8.0kPa(60mmHg)和(或)伴有PaCO2>6.7kPa(50mmHg) E.PaO2<8.6kPa(65mmHg)和(或)伴有PaCO2>6.7kPa(50mmHg)