单项选择题 B型题：代谢性酸中毒合并代谢性碱中毒的动脉血气分析可表现为（）。 A.PaCO2减低，HCO

题目：

代谢性酸中毒合并代谢性碱中毒的动脉血气分析可表现为（）。

A.PaCO₂减低，HCO₃^-明显降低，BE负值增大，AG升高，pH升高或接近正常

B.PaCO₂升高，HCO₃^-降低、正常或轻度升高，pH明显下降，AG增高

C.PaCO₂正常或略增高、略降低，HCO₃^-，pH正常，AG增高

D.PaCO₂明显增高，pH下降或正常，AG升高，HCO₃^-升高，HCO₃^-变化与AG升高不成比例

E.PaCO₂下降、正常或轻度升高，HCO₃^-可升高、正常或轻度下降，pH明显升高

答案：

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