皮皮学，免费搜题
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【单选题】
室性早搏的心电图表现为
A.
提前出现宽大畸形的QRS波群，代偿间歇完全
B.
P波消失，心室律绝对不规则，QRS波群形态正常
C.
心率加快，节律规则，QRS波群正常，P波逆行
D.
连续3个或者3个以上的室性期前收缩，可见心室夺获和室性融合波
E.
P-R间期逐渐延长，相邻RR间期进行性缩短
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