目的总结起源于三尖瓣环附近的室性心律失常的射频消融及心电图特征。方法 15例患者,根据心电图和/或动态心电图诊断为室性心动过速(VT)或频发室性早搏(VPC),均接受心脏电生理检查及射频消融治疗。消融成功后,结合靶点分布区域分析体表心电图。结果 15例消融均获成功,根据消融导管的X线影像特征及腔内电图判断均起源于三尖瓣环附近,不同区域起源的VT/VPC心电图表现各具特征,QRS波时限>140 ms、肢体导联见切迹、V1导联可见正向起始波及胸前导联移行区间≥V4判断起源于游离壁的特异度分别为100%、100%、100%、91.7%,敏感度分别为81.8%、90.9%、81.8%、100%。结论射频消融是治疗三尖瓣环附近起源的室性心律的安全、有效方法,心电图表现具其特征。 Objective To summarize radiofrequency ablation and electrocardiographic features of ventricular arrhythmias that originate near the tricuspid annulus. Methods Fifteen patients undergoing echocardiography and radiofrequency ablation were diagnosed as ventricular tachycardia (VT) or premature ventricular contractions (VPC) on the basis of electrocardiogram and / or ambulatory electrocardiogram. After successful ablation, the body surface electrocardiogram is analyzed in combination with the target distribution area. Results All 15 cases were successful in ablation. According to the X-ray image and intraluminal electrocardiogram of ablation catheter, all of them originated in the vicinity of the tricuspid annulus. The VT / VPC ECGs of different regions showed different characteristics. The duration of QRS wave was> 140 ms , Limb lead to see the notch, V1 lead visible positive start wave and thoracic lead transition interval ≥ V4 to determine the origin of free wall specificity were 100%, 100%, 100%, 91.7%, sensitivity respectively 81.8%, 90.9%, 81.8%, 100%. Conclusion Radiofrequency ablation is a safe and effective method for the treatment of ventricular arrhythmias in the vicinity of the tricuspid annulus. Electrocardiogram has its own characteristics.