Abstract: AIM: To summarize the experience of radiofrequencycatheter ablation (RFCA) in patients withatrioventricular reentry tachycardia. METHODS: Theatrioventricular accessory pathway was blocked by RFCAin 45 patients with atrioventricular reentry tachycardia:manifest accessory pathways (25 cases) and recessivenessacessory pathways (20 cases). RESULTS: The totalsuccess rates of RFCA was 97.8%.During follow-up periodof 1 to 20 months, the recurrence of atrioventricularreentry tachycardia (left-sided accessory pathway) of 1case was abolished by a second ablation.The recurrencerate was 2.2%.No complications occurred. CONCLUSION: Accurate target site mapping and skillful catheteroperation is the key of success for RFCA.

Key words: atrioventricular accessory pathway, radiofrequency catheter ablation, arrhythmia, tachycardia