Anticoagulation for post-operative atrial fibrillation after isolated coronary artery bypass grafting: a meta-analysis

Author:

van de Kar Mileen R D1ORCID,van Brakel Thomas J1ORCID,van’t Veer Marcel12ORCID,van Steenbergen Gijs J1ORCID,Daeter Edgar J3ORCID,Crijns Harry J G M4ORCID,van Veghel Dennis1ORCID,Dekker Lukas R C12ORCID,Otterspoor Luuk C1ORCID

Affiliation:

1. Department of Cardiology and Cardiothoracic Surgery, Catharina Hospital , P.O. Box 1350, Eindhoven 5602 ZA , The Netherlands

2. Department of Biomedical Engineering, Eindhoven University of Technology , Eindhoven , The Netherlands

3. Department of Cardiothoracic Surgery, Antonius Hospital , Utrecht , The Netherlands

4. Department of Cardiology and Cardiovascular Research Centre Maastricht (CARIM), Maastricht UMC+ , Maastricht , The Netherlands

Abstract

Abstract Background and Aims This study aimed to evaluate clinical outcomes in patients developing post-operative atrial fibrillation (POAF) after coronary artery bypass grafting (CABG) and characterize variations in oral anticoagulation (OAC) use, benefits, and complications. Methods A systematic search identified studies on new-onset POAF after CABG and OAC initiation. Outcomes included risks of thromboembolic events, bleeding, and mortality. Furthermore, a meta-analysis was conducted on these outcomes, stratified by the use or non-use of OAC. Results The identified studies were all non-randomized. Among 1 698 307 CABG patients, POAF incidence ranged from 7.9% to 37.6%. Of all POAF patients, 15.5% received OAC. Within 30 days, thromboembolic events occurred at rates of 1.0% (POAF: 0.3%; non-POAF: 0.8%) with 2.0% mortality (POAF: 1.0%; non-POAF: 0.5%). Bleeding rates were 1.1% for POAF patients and 2.7% for non-POAF patients. Over a median of 4.6 years, POAF patients had 1.73 thromboembolic events, 3.39 mortality, and 2.00 bleeding events per 100 person-years; non-POAF patients had 1.14, 2.19, and 1.60, respectively. No significant differences in thromboembolic risks [effect size −0.11 (−0.36 to 0.13)] and mortality [effect size −0.07 (−0.21 to 0.07)] were observed between OAC users and non-users. However, OAC use was associated with higher bleeding risk [effect size 0.32 (0.06–0.58)]. Conclusions In multiple timeframes following CABG, the incidence of complications in patients who develop POAF is low. The use of OAC in patients with POAF after CABG is associated with increased bleeding risk.

Publisher

Oxford University Press (OUP)

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