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Ann Thorac Surg 2007;83:1724-1730
© 2007 The Society of Thoracic Surgeons

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Original Articles: Cardiovascular

Video-Assisted Bilateral Epicardial Pulmonary Vein Isolation for the Treatment of Lone Atrial Fibrillation

Ertan Sagbas, MD, Belhhan Akpinar, MD^_*, Ilhan Sanisoglu, MD, Bar Caynak, MD, Burak Tamtekin, MD, Kerem Oral, MD, Burak Onan, MD

Department of Cardiac Surgery, Florence Nightingale Hospital, Istanbul, Turkey

Accepted for publication December 6, 2006.

^_* Address correspondence to Dr Akpinar, Department of Cardiac Surgery, Florence Nightingale Hospital, Abide’i Hurriyet Cad, No. 290 ili, Istanbul, Turkey (Email: belhanakpinar{at}gmail.com).

Background: This paper aims to evaluate the feasibility and the efficacy of a new off-pump, bilateral thoracoscopic pulmonary vein isolation technique in patients with lone atrial fibrillation.

Methods: Between April 2004 and February 2006, 26 drug-resistant and symptomatic lone atrial fibrillation patients (18 permanent, 8 paroxysmal) underwent an irrigated radiofrequency ablation procedure using the Cardioblate ablation system (Medtronic, Minnesota). There were 16 men and 10 women with a mean age of 55 ± 11 years. Mean duration of atrial fibrillation was 34.2 ± 18.9 months. All patients underwent a bilateral thoracoscopic procedure in which both pulmonary veins were ablated with an atrial cuff using an off-pump epicardial approach. The conduction block was assessed by pacing the pulmonary veins after each ablation. Sixteen patients underwent endoscopic stapling of the left atrial appendage.

Results: There were no hospital deaths. All procedures were completed as planned without any conversions to sternotomy. There were no major complications. Follow-up was complete at 6 months, and 80% of the patients were in sinus rhythm (paroxysmal: 100%, permanent: 72%). Of the patients with permanent atrial fibrillation, 85% had regained their atrial transport function. No major thromboembolic event was observed during the follow-up period.

Conclusions: The video-assisted bilateral pulmonary vein isolation technique was safe and effective. It was curative for paroxysmal atrial fibrillation patients and effective for permanent atrial fibrillation cases. This technique may find wider application if accumulating data further support these findings.

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