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问题:

代谢性碱中毒的危害是 A.氧离曲线左移 B.使PaCO2降低 C.抑制呼吸中枢 D.氧离曲线右

代谢性碱中毒的危害是

A.氧离曲线左移

B.使PaCO2降低

C.抑制呼吸中枢

D.氧离曲线右移


  参考答案

正确答案:AC

142.答案:AC

[考点] 氧离曲线的影响因素和变化

[分析] 代谢性碱中毒时,血液内氢离子减少,血pH值升高,使氧离曲线左移,造成血红蛋白与氧解离困难,组织缺氧,严重缺氧又可抑制呼吸中枢。代谢性碱中毒时,机体通过升高PaCO2来维持血pH的稳定。

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