These findings suggest a significant correlation between SIRI and LAD (r = 0.2098, p < 0.0001), LVEF (r=-0.1908, p < 0.0001), LVDd (r = 0.0980, p = 0.0457), LVPWTd (r = 0.1263, p = 0.0099), IVSTd (r = 0.1250, p = 0.0107), LVMI (r = 0.1319, p = 0.0071), CRP (r = 0.1096, p = 0.0286), and NT-proBNP (r = 0.2729, p < 0.0001) in patients with AF (Fig. 3). Here, NPPB is linked to atrial fibrillation.