
Keywords: CL، طول چرخه; atrial fibrillation; epicardial fat; fibrosis; obesity; TGF-β1AF, atrial fibrillation; BP, blood pressure; CL, cycle length; CoV, coefficient of variation; CS, coronary sinus; ERP, effective refractory period; HE, hematoxylin and eosin; IQR, interquartile