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Pulmonary Vein Isolation for Paroxysmal Atrial Fibrillation Using a Circular Multipolar Ablation Catheter: Safety and Efficacy Using Low‐Power Settings

The circular irrigated decapolar nMARQ ablation catheter designed for treating atrial fibrillation (AF) has recently been recalled following two deaths due to esoatrial fistula. Injury to the esophagus has been previously reported in up to 50% of patients using 20–25 W unipolar radiofrequency (RF) energy. Low power of 15 W has been proposed to prevent this complication, but the efficacy of this strategy to avoid AF recurrence is unknown.