ArticleCureus2025
Uric Acid, Homocysteine, and Inferior Vena Cava Diameter for Early Risk Stratification After Non-ST Elevation Myocardial Infarction.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionNon-ST elevation myocardial infarction (NSTEMI) carries a substantial risk of early major adverse cardiovascular events (MACE) despite advances in therapy. Easily obtainable biochemical and echocardiographic markers may improve early risk stratification, particularly in patients managed without revascularization. This prospective study assessed the prognostic significance of inferior vena cava (IVC) diameter, serum uric acid, homocysteine, and selected hematological indices in predicting 90-day MACE in NSTEMI patients treated with conservative medical therapy. Unlike prior studies that examined these biomarkers individually, our study integrates biochemical (uric acid, homocysteine), echocardiographic (IVC diameter), and hemogram-derived indices into a combined model for early risk stratification in conservatively treated NSTEMI patients.
methodsA total of 170 consecutive NSTEMI patients admitted to the University Clinical Center Tuzla between February 2022 and January 2023 were included. All patients received guideline-directed medical therapy. Clinical, echocardiographic, and laboratory data were obtained within 24 hours of admission. The primary endpoint was MACE (cardiac death, reinfarction, or urgent coronary revascularization) within 90 days. Logistic regression identified independent predictors; discriminatory ability was assessed using receiver operating characteristic (ROC) analysis, and Kaplan-Meier curves evaluated event-free survival.
resultsMACE occurred in 87 patients (51.2%). Compared to event-free patients, those with MACE had larger IVC diameters (20.25 ± 2.52 mm vs. 18.36 ± 2.16 mm; p < 0.001), higher uric acid (432.8 ± 47.3 μmol/L vs. 358.9 ± 44.6 μmol/L; p < 0.001), and elevated homocysteine levels (18.42 ± 4.13 μmol/L vs. 13.39 ± 2.88 μmol/L; p < 0.001). In multivariate analysis, uric acid (OR per 10 μmol/L = 1.32; 95% CI: 1.05-1.65; p = 0.015) and homocysteine (OR per 1 μmol/L = 1.23; 95% CI: 1.06-1.42; p = 0.005) remained independent predictors. ROC analysis showed excellent discrimination for homocysteine (AUC: 0.844) and uric acid (AUC: 0.830). IVC diameter was associated with lower MACE-free survival (log-rank p = 0.036) but lost significance after adjustment.
conclusionElevated homocysteine and uric acid independently predicted 90-day MACE in NSTEMI patients managed without revascularization. While IVC diameter was not independently predictive, its combination with biochemical markers may enhance risk stratification and guide early post-discharge management. These findings warrant validation in larger multicenter studies.
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