Abstract 2475: Pulmonary Vein Reconnection After Two or More Failed Atrial Fibrillation Ablations: Impact of the Operator Experience
Introduction: Catheter ablation of atrial fibrillation (PVI) is an established treatment option for patients with symptomatic drug refractory atrial fibrillation. Although the procedural success is quite high, the results are considered operator dependent.
Methods: 300 patients undergoing a third or more redo procedure of catheter ablation for atrial fibrillation recurrences were enrolled and divided into 3 groups: patients that had procedures performed at other centers (Group I), patients with procedures by operators who had performed at least 400 procedures (group II) and patients previously ablated by an operator who had performed more than 1000 (group III) procedures. The endpoint of the study was to identify the percentage of patients with pulmonary veins (PVs) reconnection and the presence for other triggers in each group.
Results: No statistical differences in term of sex, age, left atrial size and ejection fraction were observed between groups. The number of patients with PVs reconnection was statistically different between each group and is reported in the table⇓. Left atrial (LA) flutter was the most common type of arrhythmia recurrences in all groups.
Conclusion: Our study confirms that after two procedures the operator’s experience results in lower likelihood of PV reconnection. LA flutter was the most frequent presenting arrhythmia regardless of the number of PVs with reconnection.