符合Ⅱ型呼吸衰竭的动脉血气标准是A．PaO为50mmHg，PaCO为40mmHgB．PaO为55mmHg，PaCO为50mmHgC．PaO为65m...

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问题符合Ⅱ型呼吸衰竭的动脉血气标准是

选项 A．PaO为50mmHg，PaCO为40mmHg B．PaO为55mmHg，PaCO为50mmHg C．PaO为65mmHg，PaCO为40mmHg D．PaO为70mmHg，PaCO为40mmHg E．PaO为70mmHg，PaCO为45mmHg

答案 B

解析

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