Experience on Radiofrequency Catheter Ablation of Right Atrioventricular Accessory Pathway

Objective:The patients of right atrioventricular accessory pathway treated with radiofrequency catheter ablation(RFCA) were analyzed for a pratical and effective ablation experience.Methods:Seventy patients cases with right atrioventricular accessory pathway were treated by RFCA,including 29 males and 41 females.Among them,5 patients were with dual accessory pathway.Results:97.14% of patients successfully treated with RFCA for the first time.During the follow-up of 11months to 5 years,6 cases had recurrence of conduction problems(recurrence rate 8.82%).Five of the 6 patients were successfully treated again,one of them was treated for 3 times.RFCA procedural time 154.57±73.22 minutes,X rays exposure time 15.17±11.33 minutes.Two cases had a complication of complete atrioventricular block.Conclusion:The right atrioventricular accessory pathway treated with RFCA has high success rate,the precise mapping and catahter stability are the key of decreasing recurrence rate.The treatment with RFCA for the pathways that is close to bundle may cause the complication easily.We must emphasize the precise mapping and take the suitable ablation energy and time.