问题
单项选择题 案例分析题
患者女性，60岁，因急性下壁心肌梗死3小时入院，入院后1小时溶栓结束时，出现三度房室传导阻滞。室性逸搏，心室率为40次／分。
关于可能的发生机制，正确的是（）
A.溶栓再通，出现再灌注心率失常
B.为心梗发展的结果
C.一般阻滞部位在房室交界区，多不可以恢复
D.溶栓未成功
E.患处血管为右冠状动脉或回旋支
答案
参考答案：A
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患者女性，60岁，因急性下壁心肌梗死3小时入院，入院后1小时溶栓结束时，出现三度房室传导阻滞。室性逸搏，心室率为40次／分。
关于可能的发生机制，正确的是（）
A.溶栓再通，出现再灌注心率失常
B.为心梗发展的结果
C.一般阻滞部位在房室交界区，多不可以恢复
D.溶栓未成功
E.患处血管为右冠状动脉或回旋支
参考答案：A
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