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71临床资料倒三女性、4z岁。因阵发性心悸9年入院，院外心电图示室上性心动过速（SVT）。心内电生理检查及射频消融结果：①冠状静脉窦（＊S）S；不刺激（步长一IOms），sl＆300ms时出现人V。跃增120ms，并诱发SVT，心率14obpm，VA间期＜70ms，His京电极A波最提前，提示房室结
71 down three female clinical data, 4z years old. 9 years after the onset of paroxysmal palpitations, hospital ECG showed supraventricular tachycardia (SVT). Intracardiac electrophysiological examination and radiofrequency ablation results: ① coronary sinus (* S) S; no stimulation (step length IOms), sl & 300ms when the human V. Jump 120ms, and induced SVT, heart rate 14obpm, VA interval <70ms, His Beijing A wave electrode the most advanced, suggesting atrioventricular node