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【单选题】
有关心前区震颤正确的是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
E.
可分为收缩期震颤、舒张期震颤
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A.
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B.
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C.
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A.
B.
C.
D.
D
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