During pulsed-field ablation, unintended left atrial appendage isolation occurred due to anatomical misidentification with the left superior pulmonary vein. Left atrial appendage potentials improved after 1 month. This case highlights procedural tips to avoid this complication and emphasizes post-procedural monitoring and management strategies.
Keywords: atrial fibrillation; electrical isolation; left atrial appendage; pulmonary vein isolation; pulsed field ablation.
© 2025 The Author(s). Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society.