The use of an esophageal catheter to check the results of left atrial posterior wall isolation in the treatment of atrial fibrillation.

Background: Left atrial posterior wall isolation (LAPWI) via catheter, surgical, and hybrid techniques is a promising treatment for persistent atrial fibrillation (PersAF). We investigated whether confirmation of LAPWI can be achieved using an esophageal pacing and recording electrode.

Methods: Patients undergoing PersAF ablation with the intention to achieve LAPWI were enrolled.