Repeat procedure
The redo-procedure was performed 1.1 year after the initial procedure (13.2±3.5 years, and 14.3±4.3 years). During the redo procedures, a combination of long sheath and radiofrequency energy was selected in all cases. Moreover, in 4 cases (57%) irrigated tip catheter s and 3D mapping were selected. The redo ablation was acutely successful in all cases. Figure 5 and 6 depict two examples of patients with Mahaim accessory pathways.