Clinical Research R 2 CHADS 2 Score and Thromboembolic Events After Catheter Ablation of Atrial Fibrillation in Comparison With the CHA 2 DS 2 -VASc Score

Background: A new risk model, the R2CHADS2 (Renal Dysfunction, Congestive Heart Failure, Hypertension, Age, Diabetes, Stroke/Transient Ischemic Attack) score, was proposed to be a powerful scoring scheme in predicting stroke or systemic embolism in atrial fibrillation (AF). The goal of the present study is to validate the usefulness of the R2CHADS2 score among patients with AF after catheter ablation. We also aimed to compare the accuracy of the CHA2DS2-VASc (Congestive Heart Failure, Hypertension, Age [� 75 y], Diabetes, Stroke/Transient Ischemic Attack, Vascular Disease, Age [65-74 y], Sex [Female]) and R2CHADS2 scores for risk stratification of thromboembolic (TE) events after ablation procedures. Methods: We enrolled a total of 526 patients with AF who underwent catheter ablation. The clinical end point was the occurrence of TE events (ischemic stroke, transient ischemic attack, or other systemic embolisms) during the postablation follow-up. Results: During a follow-up of 37.5 � 21.3 months, 14 patients (2.7%) experienced TE events. The R2CHADS2 score was an independent RESUME