Uric Acid-to-Magnesium Ratio as a Novel Biomarker of Angiographic Coronary Artery Disease Burden: A Retrospective Cross-Sectional Comparative Analysis with the Uric Acid-to-HDL Ratio and Frontal QRS-T Angle in Patients Undergoing Elective Coronary Angiography

Background: Non-invasive biomarkers may facilitate early risk stratification in patients with coronary artery disease (CAD). Although the uric acid-to-HDL cholesterol ratio (UHR) has been identified as a novel marker associated with coronary atherosclerosis, the relationship between the uric acid-to-magnesium ratio (UA/Mg ratio) and the angiographic burden of coronary artery disease has not been sufficiently investigated. This study evaluated the association between the UA/Mg ratio and angiographic coronary artery disease burden in patients undergoing elective coronary angiography and compared its discriminative performance with that of the UHR and the frontal QRS-T angle. Methods: In this retrospective cross-sectional study, patients who underwent elective coronary angiography between 2022 and 2025 were evaluated. Patients with atrial fibrillation, left ventricular ejection fraction