Abstract
Pulmonary vein isolation is indicated in patients with symptomatic isolated atrial fibrillation not controlled with antiarrhythmic therapy. We describe our surgical experience with thoracoscopic pulmonary vein isolation in patients in whom percutaneous ablation has failed. Thirty-four adult patients with unsuccessful catheter ablations (range 1-4, mean 2 +/- 1) underwent thoracoscopic bipolar-radiofrequency pulmonary vein isolation. Seventeen patients had paroxysmal atrial fibrillation, 12 with persistent and 5 with long-standing persistent fibrillation, for a mean of 6 years (range 3-10 years), 13 years (5-25 years), and 9 years (3-15 years), respectively. There was no mortality during the procedure or follow-up (mean 16 +/- 11 months). Two patients needed conversion to thoracotomy owing to hemorrhage, and ablation could not be completed. Antiarrhythmic therapy was withdrawn 3 months postoperatively. Postoperative sinus rhythm was maintained in 82% of those with paroxysmal atrial fibrillation (13/15 at 6 months, 9/11 at 12 months), 60% had persistent atrial fibrillation (8/12 at 6 months and 6/10 at 12 months), and 20% had long-standing persistent atrial fibrillation (1/5 at 6 and 12 months). Preoperative left atrial diameter ...Continue Reading
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