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题目内容
(请给出正确答案)
诊断呼吸衰竭的血气标准是
A.PaO
<8.6kPa(65mmHg)和(或)伴有PaCO
>7.3kPa(55mmHg)
B.PaO
<6.7kPa(50mmHg)和(或)伴有PaCO
>8.0kPa(60mmHg)
C.PaO
<8.0kPa(60mmHg)和(或)伴有PaCO
>7.3kPa(55mmHg)
D.PaO
<8.0kPa(60mmHg)和(或)伴有PaCO
>6.7kPa(50mmHg)
E.PaO
<8.6kPa(65mmHg)和(或)伴有PaCO
>6.7kPa(50mmHg)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/3509e2fcd9c72774.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/f3f43a68ca2facf3.gif)
B.PaO
![](https://assets.51tk.com/images/c85f17c154686ae7_img/8a23d3b96fad6aa7.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/697c3ab36b89699c.gif)
C.PaO
![](https://assets.51tk.com/images/c85f17c154686ae7_img/8b963341c43e2466.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/5d25ee94674dbd55.gif)
D.PaO
![](https://assets.51tk.com/images/c85f17c154686ae7_img/8571684e0f72327c.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/1b5ed2058e83a2a0.gif)
E.PaO
![](https://assets.51tk.com/images/c85f17c154686ae7_img/f47b8b9e8c5fa97a.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/96aed97411c5deef.gif)
参考答案
参考解析
解析:在海平面大气压下,于静息条件下呼吸室内空气,并排除心内解剖分流和原发于心排血量降低等情况后,动脉血氧分压(PaO
)低于8kPa(60mmHg),或伴有二氧化碳分压(PaCO
)高于6.65kPa(50mmHg),即为呼吸衰竭(简称呼衰),故选D。解题关键:呼吸衰竭是动脉血氧分压(PaO
)低于8kPa(60mmHg),或伴有二氧化碳分压(PaCO
)高于6.65kPa(50mmH)。
![](https://assets.51tk.com/images/c85f17c154686ae7_img/59c73495f64f5849.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/a166054db44e1f3f.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/301274f3d23c6e1d.gif)
![](https://assets.51tk.com/images/c85f17c154686ae7_img/e268e2682e85e5bb.gif)
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