某钙拮抗剂可抑制房室结传导，大剂量可致窦房结、房室结电活动消失，还可舒张冠状血管及外周血管，并可降低血压，在下列最可能的药物是（） -题库考试答案搜索网

某钙拮抗剂可抑制房室结传导，大剂量可致窦房结、房室结电活动消失，还可舒张冠状血管及外周血管，并可降低血压，在下列最可能的药物是（）

单选题

2021-09-17 14:22

A、地尔硫
B、维拉帕米
C、硝苯地平
D、氟桂利嗪
E、尼卡地平

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正确答案

试题解析

地尔硫可抑制窦房结自律性，减慢房室结传导，适用于阵发性室上性心动过速。可增加冠脉流量，降低血压，适用于心绞痛、高血压的治疗。维拉帕米可抑制房室结传导，终止房室结的折返激动，治疗室上性和房室结折返激动引起的心律失常较佳，为首选药。能舒张冠状血管及外周血管，增加心肌冠脉流量，降低血压，可用于心绞痛、高血压的治疗。禁用于严重心衰及中、重度传导阻滞病人。硝苯地平可舒张冠脉，也舒张外周小动脉，主要用于心绞痛、高血压、肺动脉高压的治疗。尼卡地平是二氢吡啶类钙通道阻滞剂，降压作用同时改善脑血流量，主要用于高血压危象或急性脑血管病时高血压急症。氟桂嗪为外周血管扩张剂，能直接扩张血管

标签：内、儿科康复专业必修课高血压皮肤科住院医师心脏内科上海住院医师神经内科

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