Keywords Atrioventricular nodal reentrant tachycardia Catheter ablation;radiofrequency current Atrioventricular function curve Dual atrioventriclar nodal pathways SV interval SV/SS ratio;

• 心动过速;房室结折返性;导管消融;射频电流;房室结功能曲线;房室结双径路;SV间期;SV/SS比值;