Magnetic resonance-guided re-ablation for atrial fibrillation is associated with a lower recurrence rate: a case-control study.

Aims: Our aim was to analyse whether using delayed enhancement cardiac magnetic resonance imaging (DE-CMR) to localize veno-atrial gaps in atrial fibrillation (AF) redo ablation procedures improves outcomes during follow-up.

Methods And Results: We conducted a case-control study with 35 consecutive patients undergoing a DE-CMR-guided Repeat-pulmonary vein isolation (Re-PVI) procedure. Those with more extensive ablations (e.