Background: The ideal oral anticoagulant agent during catheter ablation (CA) for atrial fibrillation (AF) remained unclear.
Hypothesis: Novel oral anticoagulants (NOACs) are safer and effective compared to uninterrupted vitamin K antagonists (U-VKA) among patients requiring CA for AF.
Methods: Four randomized controlled trials (RCTs) and 9 observational studies (OS) were selected using PubMed/Medline, EMBASE and the CENTRAL data bases (Inception-December-2017). Estimates were reported as random effects risk ratio (RR) with 95% confidence interval (CI). The primary safety outcome was major bleeding and main efficacy endpoint was thromboembolism.
Results: In RCTs restricted analysis, NOACs significantly reduced the relative risk of major bleeding by 72% compared to U-VKA (RR, 0.28, 95% CI, 0.14-0.58, P < 0.001). This significant effect was not achieved in OS based analysis (RR, 0.86, 95% CI, 0.42-1.78, P = 0.68). In terms of thromboembolism, both anticoagulation strategies were equally effective in analysis of RCTs (RR, 0.28, 95% CI, 0.05-1.70, P = 0.17) or OS (RR, 1.43, 95% CI, 0.46-4.39, P = 0.54). In sensitivity analysis, there was no difference among uninterrupted NOACs (U-NOACs) and U-VKA in terms of major bleeding [(RCTs: RR, 0.33, 95% CI, 0.10-1.06, P = 0.06); (OS: RR, 0.70, 95% CI, 0.28-1.78, P = 0.46)] or thromboembolism [(RCTs: RR, 0.25, 95% CI, 0.03-2.29, P = 0.22); (OS: RR, 0.68, 95% CI, 0.08-5.53, P = 0.72)].
Conclusion: NOACs, either interrupted or un-interrupted, are safer and equally effective drugs compared to U-VKA in AF patients requiring CA.
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| http://dx.doi.org/10.1016/j.carrev.2018.05.007 | DOI Listing |
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