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目的:总结射频消融治疗二尖瓣环附近起源室性心律失常的安全性及疗效;分析其心电图特征及对标测消融的意义。方法:入选二尖瓣环附近起源室性心律失常射频消融患者48例,通过同步12导联体表心电图,分析其心电图特征及进行初步定位;在Ensite velocity 3.0Nav的导航下,利用激动标测和起搏标测相结合,确定消融靶点,使用温控标测消融导管进行消融。结果:本组手术成功率为95.8%,复发率4.2%,并发症发生率2.1%,二尖瓣环附近起源室性心律失常的体表心电图有一定的特征性。结论:射频消融治疗二尖瓣环附近起源室性心律失常是安全的、有效的;其体表发作图特征对其标测消融有指导作用。
OBJECTIVE: To summarize the safety and efficacy of radiofrequency catheter ablation in the treatment of ventricular arrhythmias in the vicinity of the mitral valve annulus, and to analyze its electrocardiographic features and its significance for landmark ablation. Methods: Forty-eight patients with RFA induced by ventricular arrhythmia in the vicinity of the mitral annulus were enrolled in this study. Electrocardiogram (ECG) and initial location were analyzed by synchronizing 12-lead body surface electrocardiogram. With Ensite velocity 3.0Nav navigation, And pacing mapping combined to determine the ablation target, the use of temperature control mapping ablation catheter ablation. Results: The success rate of operation was 95.8%, the recurrence rate was 4.2% and the complication rate was 2.1%. The surface electrocardiogram of ventricular arrhythmia near the mitral annulus had certain characteristics. Conclusion: Radiofrequency ablation is safe and effective in the treatment of ventricular arrhythmias in the vicinity of the mitral valve annulus. The body surface seizure pattern can guide the ablation.