Abstract
The Japanese Catheter Ablation (J‐AB) registry, started in August 2017, is a voluntary, nationwide, multicenter, prospective, observational registry performed by the Japanese Heart Rhythm Society (JHRS) in collaboration with the National Cerebral and Cardiovascular Center. From January 2022, the data registration system was changed from Research Electronic Data Capture (REDCap) system to Fountayn system. The purpose of this registry is to collect the details of target arrhythmias, the ablation procedures, including the types of target arrhythmias, outcomes, and acute complications in the real‐world settings. During the year 2024, we have collected a total of 112 151 procedures (mean age of 67.5 years and 65.2% male) from 589 participant hospitals. Detailed data were shown in Figures and Tables.

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