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Resistin is an adipocytokine that is abundantly secreted from lipid cells and is related to the inflammatory process and cardiometabolic diseases. This study aimed to examine the role of resistin on inflammation and its effect on the clinical outcome of patients with atrial fibrillation (AF) following catheter ablation.A total of 108 patients (56.9 ± 12.0 years, 76.8% male) with symptomatic and drug-refractory AF undergoing catheter ablation were enrolled. Inflammatory biomarkers and epicardial fat volume by contrast computed tomography (CT) images were assessed in all patients before the procedure. Baseline resistin correlated with epicardial fat volume, tumor necrosis factor-α (TNF-α), and left atrial (LA) scar area. After the index procedure, the univariate analysis revealed that hypertension, persistent AF, LA diameter, and plasma resistin level were related to recurrent atrial arrhythmia. Multivariate regression analysis revealed that persistent AF, LA diameter, and plasma resistin level all independently predicted recurrent atrial arrhythmia after ablation. Plasma resistin with a level higher than 777 (pg/mL) could predict recurrence following catheter ablation of AF.High plasma resistin level is associated with poor left atrial substrate, high epicardial fat volume, and elevated TNF-α level in patients with AF. Plasma resistin may predict the recurrence of atrial arrhythmia after ablation.

international heart journal

Resistin as a Biomarker for the Prediction of Left Atrial Substrate and Recurrence in Patients with Drug-Refractory Atrial Fibrillation Undergoing Catheter Ablation