射频消融治疗儿童特发性室性心动过速

Radiofrequency catheter ablation of idiopathic ventricular tachycardia in children

本文报道应用射频消融术治疗6例儿童特发性室性心动过速（IVT）男1例，女5例，平均年龄8.5岁（4－14.5岁）。临床检查排除器质性心脏病.VT起源于左室间隔部4例．起源于右室流出道2例；选用温控消融导管，4例采用起搏标测结合激动顺序标测，于VT发作时放电，2例采用起搏标测，于窦性心律时放电；6例消融均成功。平均随访12．8个月（1－22个月），1例术后第4周复发，第5周于同一部位再次消融成功。无并发症发生。结果表明射频消融治疗儿童IVT是有效、安全的。

Radiofrequcy ablation was successful in six children with idiopathic ventricular tachycardia without obvious structural heart disease. there were 1 boy and 5 girls with a mean age of 8. 5 years (range, 4 -14. 5)years. Sites of ventricular tachycardia origin included the left ventricular septum in 4 patients and the right ventricular outflow tract in 2 patients. Using the themistor catheter with feedback control of catheter tip temperature , radiofrequency current was delivered during ventricular tachycardia in 4 patients with pace combine activation mapping, and was delivered during sinus rhythm in 2 patients with pace mapping. Radiofrequcy ablation was successful in six children. All patients were followed for a mean of 12. 8 months(range, 1- 22 months),one patient had recurrent ventricular tachycardia 4 weeks after the procedure, and was successful ablated again at the same site during 5 weeks. There were no complications. The present study demonstrate radiofrequcy ablation therapy is effective and safe in children with idiopathic ventricular tachycardia.