Clinical effect and safety of catheter ablation for idiopathic atrial fibrillation

Objective To investigate the effect and safety of catheter ablation for idiopathic atrial fibrillation(AF).Methods Thirty-eight cases were included in this study,with 29 cases of paroxysmal AF,and 9 cases of persistent AF.Pulmonary vein isolation(PVI) was performed in earlier 6 cases.Electroanatomical systems(Carto) guided circumferential pulmonary veins antrum ablation was performed in 32 cases.The endpoint of ablation was complete electro-isolation of pulmonary veins.Results Thirty-eight cases were successfully achieved the endpoint after the ablation instantly.No severe complication was found during the procedure.Eight cases developed atrial arrhythmias at 5-8d after ablation.Two patients were early recurrence,one patient with persistent AF was converted to paroxysmal and underwent re-ablation succussfully,the other with paroxysmal AF decreased episode frequency and took amiodarone.Other 36 cases were not recurrence.No complication was found during the follow-up.Conclusion Catheter ablation is safe and effective for treating idiopathic AF.