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患者女性,39岁,患风湿性心瓣膜病,二尖瓣狭窄。图1:为V1导联,可见电压低小,时限0.10”、波峰含糊,频率为260次/分的心动过速,在连续3次心动之后有一个更低小负波。这些表现很象室性心动过速伴3:1逆行室房传导。图2:为同一患者的12导联记录,从这帧心电图中才得以确诊心房扑动伴3:1房室传导,额面电轴右偏。V1导联中所见的微小“逆行P波”,实际上是QRS波群,而宽有切迹的波动却是心房扑动波。
Patient Female, 39 years old with rheumatic valvular disease, mitral stenosis. Figure 1: for the V1 lead, the voltage is low, the time limit of 0.10 “, peak ambiguity, the frequency of 260 beats / min tachycardia, after three consecutive heartbeats have a lower and lower negative. These performances are very much like the room Tachycardia with 3: 1 retrograde ventricular conduction. Figure 2: For the same patient 12 lead records, from this frame ECG was confirmed atrial flutter with 3: 1 atrioventricular conduction, frontal axis right deviation The tiny ”retrograde P-wave" seen in the V1 lead is actually a QRS complex, and the wide constellation is the atrial flutter wave.