Initial procedure
All patients presented with post-procedure recurrence (n=7, 18%), with 3 (42%) presenting with Mahaim fibers. The main reason for recurrence seemed to be inadequate lesion formation due to lack of catheter stability in 5 (72%). Interestingly, a long sheath was used in only 1 (14%) case during the initial procedure while an irrigated catheter was preferred in 3 (43). Overall, this group experienced the longest fluoroscopy times and ablation times.