The AF-RI, integrating LAD, LAAEV, and NT-proBNP, demonstrated outstanding discrimination (AUC: 0.917, 95% CI: 0.874-0.960), with significantly higher sensitivity (88.7%) and specificity (84.6%) than single-parameter models (all <i>p</i> < 0.05). Here, NPPB is linked to atrial fibrillation.