• Tomoyuki Nagao, Yasuya Inden, Masayuki Shimano, Masaya Fujita, Satoshi Yanagisawa, Hiroyuki Kato, Shinji Ishikawa, Aya Miyoshi, Satoshi Okumura, Shiou Ohguchi, Toshihiko Yamamoto, Naoki Yoshida, Makoto Hirai, and Toyoaki Murohara.
• Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
• Pacing Clin Electrophysiol. 2015 Feb 1; 38 (2): 155-63.

IntroductionApixaban, a factor Xa (FXa) inhibitor, is a new oral anticoagulant for stroke prevention in atrial fibrillation (AF). However, little is known about its efficacy and safety as a periprocedural anticoagulant therapy for patients who had undergone catheter ablation (CA) for AF.Methods And ResultsWe evaluated 342 consecutive patients who underwent CA for AF between April 2013 and March 2014 and received apixaban (n = 105) and warfarin (n = 237) for uninterrupted periprocedural anticoagulation. We retrospectively investigated the occurrence of bleeding and thromboembolic complications during the procedural period and compared them between the apixaban group (AG) and warfarin group (WG). Thromboembolic complications occurred in one (0.4%) patient in the WG. Major and minor bleeding complications occurred in one (1%) and four (4%) patients in the AG, and three (1%) and 12 (5%) patients in the WG. No significant difference in complications was observed between the AG and WG. Of importance, adverse event rates did not differ between the two groups after adjusting by a propensity score analysis. In preoperative tests of blood coagulation, there were significant differences in the prothrombin time, activated partial thromboplastin time, FXa activity, and prothrombin fragment 1 + 2 (F1+2) levels between the AG and WG.ConclusionThe use of apixaban during the periprocedural period of AF ablation seemed as efficacious and safe as warfarin.© 2014 Wiley Periodicals, Inc.

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