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氨苯蝶啶作用的特点是()

单选题
2021-12-27 17:41
A、产生低氯碱血症
B、具有抗醛固酮作用
C、产生高血糖反应
D、产生高血钾症
E、产生低血钠症
查看答案

正确答案
D

试题解析
氨苯蝶啶属于低效能利尿药保钾利尿药,作用于远曲小管末端和集合管,通过阻滞管腔膜Na+通道而减少Na+的重吸收,抑制了K+的分泌,因而产生了排Na+、利尿、保钾的作用。它的作用并非竞争性拮抗醛固酮。长期服用可致高钾血症。另一种保钾利尿药螺内酯(安体舒通)是醛固酮的竞争性拮抗药

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