[单选题]

诊断呼吸衰竭的血气标准是

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.PaCO2<8.6kPa(65mmHg)和(或)伴有PaCO26.7kPa(50mmHg)

参考答案与解析: