Kaplan-Meier curves showing freedom from atrial fibrillation (AF) after the first 3 months of follow-up (blanking period) in patients with HD maps acquired by means of the OC HD-Grid and MC Pentarey (panel A), and in those with HD maps acquired by means of CMC AFocus and LassoNav (panel B). Freedom from AF was comparable in all patients (AFocus versus LassoNav p=0.6; OC versus MC p=0.8).