Outcomes of Surgical Ablation for Atrial Fibrillation in On- Versus Off-pump Coronary Artery Bypass Grafting

Overview

Journal Interdiscip Cardiovasc Thorac Surg

Publisher Oxford University Press

Specialties Cardiology & Vascular Diseases
General Surgery
Pulmonary Medicine

Date 2024 Aug 9

PMID 39120119

Authors

Mindy Vroomen

Ulrich Franke

Jochen Senges

Ivar Friedrich

Theodor Fischlein

Thorsten Lewalter

Taoufik Ouarrak

Bernd Niemann

Andreas Liebold

Thorsten Hanke

Nicolas Doll

Marc Albert

Affiliations

Soon will be listed here.

Abstract

Objectives: A considerable number of patients undergoing coronary artery bypass grafting surgery suffer from atrial fibrillation and should be treated concomitantly. This manuscript evaluates the impact of on-pump versus off-pump bypass grafting on the applied lesion set and rhythm outcome.

Methods: Between January 2017 and April 2020, patients who underwent combined bypass grafting and surgical ablation for atrial fibrillation were consecutively enrolled in the German CArdioSurgEry Atrial Fibrillation registry (CASE-AF, 17 centres). Data were prospectively collected. Follow-up was planned after one year.

Results: A total of 224 patients were enrolled. No differences in baseline characteristics were seen between on- and off-pump bypass grafting, especially not in type of atrial fibrillation and left atrial size. In the on-pump group (n = 171, 76%), pulmonary vein isolation and an extended left atrial lesion set were performed more often compared to off-pump bypass grafting (58% vs 26%, 33 vs 9%, respectively, P < 0.001). In off-pump bypass grafting a box isolating the atrial posterior wall was the dominant lesion (72% off-pump vs 42% on-pump, P < 0.001). Left atrial appendage management was comparable in on-pump versus off-pump bypass grafting (94% vs 91%, P = 0.37). Sinus rhythm at follow-up was confirmed in 61% in the on-pump group and in 65% in the off-pump group (P = 0.66). No differences were seen in in-hospital or follow-up complication-rates between the two groups.

Conclusions: In coronary artery bypass grafting patients undergoing concomitant atrial fibrillation ablation, our data suggests that the technique applied for myocardial revascularization (off-pump vs on-pump) leads to differences in the ablation lesion set, but not in safety and effectiveness.

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