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如何鉴别中枢性尿崩症与原发性肾性尿崩症()

单选题
2022-01-11 21:23
A、水试验
B、血浆渗透压
C、血钠水平
D、尿渗透压与尿比重
E、以上都不是
查看答案

正确答案
E

试题解析
中枢性尿崩症是由于抗利尿激素(ADH)分泌不足所致,原发性肾性尿崩症是肾小管上皮细胞对ADH无反应所致。尿渗透压与尿比重、血钠水平、血渗透压及禁水试验在两种疾病中无明显差异。通过加压素试验可鉴别两者,加压素试验不能提高原发性肾性尿崩症的尿渗透压,但可使中枢性尿崩症患儿的尿渗透压升高。

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