Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Current Status of Catheter Ablation for Atrial Fibrillation
– Updated Summary of the Japanese Catheter Ablation Registry of Atrial Fibrillation (J-CARAF) –
Koichi InoueYuji MurakawaAkihiko NogamiMorio ShodaShigeto NaitoKoichiro KumagaiYasushi MiyauchiTeiichi YamaneNorishige MoritaKen Okumuraon behalf of the Japanese Heart Rhythm Society Members
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2014 Volume 78 Issue 5 Pages 1112-1120


Background: The purpose of this study was to provide precise data on the current status of catheter ablation for atrial fibrillation (AF) in Japan. Methods and Results: The Japanese Heart Rhythm Society requested that members retrospectively register data for AF ablation performed in September 2011, March 2012, and September 2012. A total of 165 centers submitted data for 3,373 patients (age, 62±11 years; male, 76.1%; paroxysmal AF, 64.4%). Pulmonary vein isolation (PVI) and additional ablation were performed in 97.5% and 77.4% of patients, respectively. 3-D mapping systems and irrigated-tip catheters were used in 94.8% and 87.7% of the patients, respectively. Although the mean CHADS2 score was 1.0±1.0, the majority received oral anticoagulant (OAC) during and following the procedure (69.8% and 97%, respectively). Vitamin K antagonist (VKA) prescription, however, decreased (1st vs. 3rd survey, during and following the procedure, 59.3% vs. 47.8% and 81.7% vs. 55.2%, respectively, P<0.0001, both) and that of new OAC (NOAC) increased drastically (9.6% vs. 24.2% and 15.8% vs. 42.1%, respectively, P<0.0001). Early complications were reported in 4.5% of the patients, but no instance of early death was reported. Conclusions: In addition to PVI, additional ablation procedures are also performed very frequently. Although the mean CHADS2 score was low, peri-procedural OAC therapy was commonly performed, and NOAC drastically superseded VKA.  (Circ J 2014; 78: 1112–1120)

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