Geriatric Nutritional Risk Index as a predictor of arrhythmia recurrence after catheter ablation of atrial fibrillation

Abstract Background and aims The nutritional risk of patients who undergo atrial fibrillation (AF) ablation varies. Its impact on the recurrence after ablation is unclear. We sought to evaluate the relationship between the nutritional risk and arrhythmia recurrence in patients who undergo AF ablation. Methods and results We enrolled 538 patients (median 67 years, 69.9% male) who underwent their first AF ablation. Their nutritional risk was evaluated using the pre-procedural geriatric nutritional risk index (GNRI), and the patients were classified into two groups: No-nutritional risk (GNRI ≧ 98) and Nutritional risk (GNRI Conclusion A pre-procedural malnutrition risk was significantly associated with increased arrhythmia recurrences in patients who underwent AF ablation. Registration number for clinical trials This research protocol was approved by the institutional review board of the Japanese Red Cross Musashino Hospital (approval number: 2029, approval date: June 15, 2020).