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Second Chinese National Registry of Catheter Ablation of Tachyarrhythmia

Department of Cardiology People's Hospital of Peking University Beijing, People's Republic of China
For reprint information contact: Hu Da Yi, MD Tel: 86 10 6879 2845 Fax: 86 10 6879 2845 email: heart{at}public.fhnet.cn.net Department of Cardiology, People's Hospital of Peking University, No. 11 Xizhimen Nandajie, Beijing 100044, People's Republic of China.

The Chinese national registry of radiofrequency catheter ablation of tachyarrhythmias included data from 134 hospitals over 3 years from January 1995. Ablation was used in 24,343 patients, with 97% success, 3.1% recurrence, 0.95% complications, and 0.02% mortality overall. Accessory pathway ablation was performed in 15,617 patients (64.2%) with atrioventricular reciprocating tachycardia (97% success, 2.8% recurrence, 1% complications). The 6,746 patients (27.7%) with atrioventricular nodal reentrant tachycardia underwent slow pathway ablation (98% success, 2.7% recurrence, 1% complications). Focal ablation in the right or left ventricle was attempted in 1,025 patients (4.2%) with idiopathic or organic ventricular tachycardia (87% success, 6.8% recurrence, 0.5% complications). The 419 patients with atrial tachycardia underwent atrial focal ablation (84% success, 9.9% recurrence, 0% complications). Focal or linear ablation of the isthmus was conducted in 366 patients with atrial flutter (89% success, 10% recurrence, 1.1% complications). Atrioventricular junction ablation was used for rate control in 170 patients with atrial fibrillation (99% success). Multiple atrial linear ablations for rhythm control were 56% successful. Success rates and incidence of complications depended on the type of tachyarrhythmia, and remained constant over the 3 years. Further improvements in technique are needed to improve success rates and decrease the incidence of complications.