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下列不属于普罗帕酮药理作用的是()
分类:
药理学(一)(02903)
发表:2024年08月13日 19时08分23秒
作者:
admin
阅读:
(2)
下列不属于普罗帕酮药理作用的是()
A、适度抑制Na+内流
B、阻断13受体
C、阻滞钙通道
D、缩短ERP
【正确答案】:D
【题目解析】:本题考查抗心律失常药普罗帕酮的药理作用。普罗帕酮属于IC类抗心律失常药物,阻滞Na+内流,降低自律性;降低0相去极化速度和幅度,减慢传导;有钙通道阻断作用;有β受体阻断作用;适度延长APD、ERP,且减慢传导的程度超过延长ERP的程度,故易引起折返而有致心律失常作用。
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