问题
单项选择题 A1/A2型题
急性下壁心肌梗死时最多见心律失常是（）
A.室性期前收缩
B.房性早搏
C.束支传导阻滞
D.房室传导阻滞
E.房室交界处逸搏
答案
参考答案：D
解析：前壁心肌梗死易发生室性心律失常，下壁心肌梗死易发生房室传导阻滞，其阻滞部位多在房室束以上处，预后较好。
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急性下壁心肌梗死时最多见心律失常是（）
A.室性期前收缩
B.房性早搏
C.束支传导阻滞
D.房室传导阻滞
E.房室交界处逸搏
参考答案：D
解析：前壁心肌梗死易发生室性心律失常，下壁心肌梗死易发生房室传导阻滞，其阻滞部位多在房室束以上处，预后较好。
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