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Introduction and objectives This report presents the findings of the 2014 Spanish Catheter Ablation Registry. Methods For data collection, each center was allowed to choose freely between 2 systems: retrospective, requiring the completion of a standardized questionnaire, and prospective, involving reporting to a central database. Results Data were collected from 85 centers. A total of 12 871 ablation procedures were performed, for a mean of 149.5 ± 103 procedures per center. The ablation targets most frequently treated were atrioventricular nodal reentrant tachycardia (n = 3026; 23.5%), cavotricuspid isthmus (n = 2833; 22.0%), and atrial fibrillation (n = 2498; 19.4%). The number of ablation procedures for ventricular arrhythmias was similar to that of 2013, but there was a slight increase in the treatment of all the ventricular substrates, especially those associated with idiopathic ventricular tachycardia and scarring following myocardial infarction. The overall success rate was 95%, the rate of major complications was 1.3%, and the mortality rate was 0.02%. Conclusions The 2014 registry shows that the number of ablation procedures performed continued its upward trend and that, overall, the success rate was high and the number of complications low. Ablation of complex conditions continued to increase.

Introduction and objectives This report presents the results of the 2013 Spanish Catheter Ablation Registry. Methods Data were collected using 2 systems: retrospectively by completing a dedicated form and prospectively by reporting to a central database. Each participating center chose 1 of the 2 data collection methods. Results Eighty centers voluntarily contributed data to the registry. A total of 11 987 ablation procedures were performed, with a mean (standard deviation) of 149 (105) procedures per center. The 3 main arrhythmic substrates treated were atrioventricular nodal reentrant tachycardia (n = 2959; 24.6%), cavotricuspid isthmus ablation (n = 2700; 22.5%), and atrial fibrillation (n = 2201; 18.4%). The number of ventricular ablation procedures was similar to the 2012 activity, but there was a slight increase in procedures for scar-related postmyocardial infarction ventricular tachycardia. The success rate was 94.4%, major complications occurred in 1.8%, and the mortality rate was 0.03%. Conclusions In line with previous reports, the data from the 2013 registry show a continuing increase in the number of ablations performed. Overall, there was a high success rate and few complications. Ablation of complex substrates has continued to increase.