题目：
家庭氧疗的动脉血气指征是（）
A.PaO2<50mmHg
B.PaO2<60mmHg
C.PaO2<55mmHg
D.PaO2<70mmHg
E.PaO2<80mmHg
答案：
参考答案：C
家庭氧疗的动脉血气指征是（） A.PaO2 B.PaO2 C.PaO2 D.PaO2
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