患儿，男，10岁，因癫痫大发作入院，曾服用苯巴比妥10月余，因疗效不佳两日前改服苯妥英钠，结果癫痫反而加重，原因是（） -题库考试答案搜索网

患儿，男，10岁，因癫痫大发作入院，曾服用苯巴比妥10月余，因疗效不佳两日前改服苯妥英钠，结果癫痫反而加重，原因是（）

单选题

2021-09-09 18:33

A、苯妥英钠剂量太小
B、苯妥英钠对癫痫大发作无效
C、苯妥英钠为肝药酶诱导剂，加速自身代谢
D、苯妥英钠尚未达到有效血药浓度
E、苯妥英钠剂量过大出现中毒

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正确答案

D

试题解析

苯妥英钠达到有效血药浓度需两周时间。因此答案为D。

标签：药理学主管药师主管药师专业知识第一章药理学

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