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本例下图第1、4、7个QRS波群宽大畸形,P-R间期100ms,QRS波群起始粗钝形成“δ”波,P-J间期240ms,为心室预激。第2、5、8个窄QRS波群为窦性P波经房室结顺传形成,其后T波上升支均可见P~-波,R-P~-间期160ms,提示为显性房室旁道逆传形成;并经P~--R间期440ms后顺传心室形成与窦性心搏一致的窄QRS波群。上图第1、13个为窦性心搏,QRS波群后均可见与下图一致的P~-波。其中第1个P~-波后继以短阵心动过速:R-P~-间期固定160ms,P~--R间期220ms,频率158次/min;可以明确为短阵顺向型房室折返性心动过速沿房室结快径路
In the following figure, the 1st, 4th and 7th QRS wave groups are large deformity, the P-R interval is 100ms, and the beginning of the QRS wave group forms a “δ” wave with a P-J interval of 240ms, which is the ventricular pre-excitation. The 2nd, 5th and 8th narrow QRS complexes were sinus P waves formed by the anomalies of the antrum, followed by the rising of the T wave, P ~ - wave and RP ~ - interval of 160 ms, suggesting a dominant atrioventricular Bypass pathway formed; and by P ~ - R interval 440ms after the formation of the heart and sinus ventricular smoothing consistent narrow QRS complex. The 1st and 13th of the above figure are sinus beats, and the P ~ - waves consistent with the figure below can be seen after the QRS complex. Among them, the first P ~ - wave followed by bradycardia tachycardia: RP ~ - interval of 160ms, P ~ - R interval of 220ms, frequency of 158 beats / min; Tachycardia along the atrioventricular junction fast track