Does peri-procedural rivaroxaban reduce thromboembolic or bleeding events compared to vitamin K antagonists in patients undergoing catheter ablation of atrial fibrillation?
Peri-procedural rivaroxaban appears to be a safe and effective alternative to vitamin K antagonists for patients undergoing atrial fibrillation ablation, with comparable rates of thromboembolic and bleeding events.
Rivaroxaban is increasingly used in patients undergoing catheter ablation of atrial fibrillation (AF). In the absence of large controlled trials, a comprehensive meta-analysis of the literature appears to be the best way to obtain reliable evidence on rare peri-procedural outcomes such as thromboembolic or bleeding events. We aimed to provide a detailed analysis of currently available data on safety and efficacy of peri-procedural rivaroxaban in patients undergoing AF ablation. We performed a systematic search of the English language literature for studies comparing peri-procedural rivaroxaban therapy with vitamin K antagonists (VKAs) and reporting detailed data on bleeding and/or thromboembolic complications. The Peto odds ratio (POR) was used to pool data into a fixed-effect meta-analysis. A total of 7400 patients undergoing catheter ablation were included in 15 observational and 1 randomized studies of which 1994 were receiving rivaroxaban and 5406 VKA. The risk of thromboembolism trended to be lower in the rivaroxaban group 4/1954 vs. 19/5219, POR 0.40, 95% confidence interval (CI), 0.16-1.01, P = 0.052. Major bleeding events occurred in 23 of 1994 cases (1.15%) in the rivaroxaban and 90 of 5406 (1.66%) in the VKA group (POR 0.74, 95% CI, 0.46-1.21, P = 0.23). A total of 87 minor bleeding events were reported in 1753 patients (4.96%) in the rivaroxaban group and in 165 of 4009 patients (4.12%) in the VKA group (POR 0.84, 95% CI 0.63-1.11, p = 0.22). In patients undergoing AF ablation, rivaroxaban appears to be an effective and safe alternative to VKA.
Vámos et al. (2016) studied this question.