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Long-Term Follow-Up of Cardiac Rhythm in 320 Patients After the Cox-Maze III Procedure for Atrial Fibrillation
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Thoracic Surgery.
Department of Internal Medicine, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden.
Department of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden.
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2016 (English)In: Annals of Thoracic Surgery, ISSN 0003-4975, E-ISSN 1552-6259, Vol. 101, no 4, 1443-1449 p.Article in journal (Refereed) PublishedText
Abstract [en]

Background. The Cox-maze III (CM-III) procedure is the gold standard for surgical treatment of atrial fibrillation (AF). Excellent short-term results have been reported, but long-term outcomes are lesser known. The aim was to evaluate current cardiac rhythm in a nationwide cohort of CM-III patients with very long follow-up.

Methods. Perioperative characteristics were retrospectively analyzed in 536 "cut-and-sew" CM-III patients operated on from 1994 to 2009 in 4 centers. Of these, 54 patients had died and 20 were unavailable at follow-up. The remaining 462 patients received a survey concerning arrhythmia symptoms, rhythm, and medication; of these, 320 patients (69%), comprising 252 men, with a mean age of 67 years (range, 47 to 87 years), and 83% with stand-alone CM-III, returned a current 12-lead electrocardiogram. Long-term monitoring was evaluated in 40 sinus rhythm patients. Postoperative stroke/transient ischemic attack was evaluated by register analysis.

Results. Mean follow-up was 111 44 months (range, 36-223 months). Electrocardiogram analysis showed sinus rhythm in 219 of 320 patients (68%), and regular supraventricular rhythm (sinus, nodal, or atrial pacing) in 262 (82%), with 75% off class I/III antiarrhythmic medication. This group had lower arrhythmia symptom scores and medication use. Rhythm outcome did not differ by gender, age, type of AF, or stand-alone vs concomitant operation. Patients with more than 10 years of follow-up had a lower rate of regular supraventricular rhythm (69% vs 91%, p = 0.02). Long-term monitoring showed freedom from AF/atrial flutter in 38 of 40 patients (95%). The incidence of stroke/transient ischemic attack was 0.37% per year (11 patients).

Conclusions. In a single-moment electrocardiogram evaluation 9 years after the cut-and-sew CM-III, 82% of patients were in sinus rhythm or other regular supraventricular rhythm. These findings support a long-lasting positive effect of the CM-III procedure, which is relevant when evaluating current nonpharmacologic therapies for AF. (C) 2016 by The Society of Thoracic Surgeons

Place, publisher, year, edition, pages
2016. Vol. 101, no 4, 1443-1449 p.
National Category
Clinical Medicine
Identifiers
URN: urn:nbn:se:uu:diva-294681DOI: 10.1016/j.athoracsur.2015.09.066ISI: 000372522700040PubMedID: 26654727OAI: oai:DiVA.org:uu-294681DiVA: diva2:932249
Funder
Swedish Heart Lung Foundation
Available from: 2016-06-01 Created: 2016-05-26 Last updated: 2016-06-01Bibliographically approved

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Albåge, AndersJideus, Lena
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