有关心前区震颤正确的是（）。 -题库考试答案搜索网

有关心前区震颤正确的是（）。

单选题

2021-12-23 20:25

A、常见于二尖瓣关闭不全
B、常见于主动脉瓣关闭不全
C、震颤系血液流经狭窄的瓣膜口或异常通道时产生的涡流所致
D、以手掌触诊确定震颤的具体部位和时相
E、可分为收缩期震颤、舒张期震颤

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正确答案

试题解析

心前区震颤常见于某些先天性心血管病及狭窄性瓣膜病变，而在瓣膜关闭不全时则较少有震颤。系血流经狭窄的瓣膜口或关闭不全或异常通道流至较宽广的部位时产生漩涡，使瓣膜、心壁或血管壁产生振动传至胸壁所致。检查时用手掌尺侧（小鱼际）触诊以确定震颤的具体部位和时相。按出现的时期可分为收缩期震颤、舒张期震颤和连续性震颤三种。

标签：体格检查消化内科基础知识内分泌主治医师

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