The study of successful radiofrequence ablation endpoint assessment for the patients with paroxysmal atrial fibrillation / 中国介入心脏病学杂志

ABSTRACT

Objective To evaluate the efficacy of the end point of catheter ablation of pulmonary vein (PV) foci initiating atrial fibrillation (AF) to guide the catheter ablation of PAF Methods Thirty two drug resistant PAF patients withdrew all antiarrhythmias drugs for one week and received Holter monitoring on dyas 7, 5, 3, and 1 before operation, respectively During the operation, focal ablation was performed in the patients whose target PV could be documented, and all pulmonary veins os and isthmus of right atrium were ablated in the other patients All patients received Holter monitor on days 1,3,5, and 7 postablation, respectively If PAF relapsed after the first operation, the patient would undergo operation again until no AF was documented The patients were followed up for 3 to 20 months Results Total 82 PV in 32 patients were success isolated In foci ablation patients, 9(60 0%) patients successed by one operation, and 6(40 0%) patients successed after the second operation In all PVs isolation patients, 9(47 0%) patients successed by one operation, and 10 (58 8%) patients successed after the second operation, and the success rate was 11 (64 7%) after the third operation The overall success rate was 81 3% Conclusion The endpoint of PAF ablation should be no AF recurrence when no antiarrhythmias drugs were administrated The success rate was higher in the patients who had clear target PV and the overall success rate could be improved by the ablation once again