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While atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) commonly coexist, the efficacy of pulmonary vein isolation in the setting of HFpEF is unclear. In a cohort of patients who underwent cryoballoon ablation (CBA) from 2011 to 2016, we calculated the H FPEF risk score, a novel 6-item score (scale 0-9 points) that accurately predicts the probability of HFpEF. We compared characteristics of patients by H FPEF score and evaluated the association of H FPEF score with 12-month recurrence of AF post-procedur