Role of combined use of mean platelet volume-to-lymphocyte ratio and monocyte to high-density lipoprotein cholesterol ratio in predicting patients with acute myocardial infarction

BACKGROUND: Atherosclerosis and thrombosis play important roles in the pathophysiology of acute coronary syndrome, with platelet activation and inflammation as the key and initiative factors. Recently mean platelet volume-to-lymphocyte ratio (MPVLR) and monocyte to high-density lipoprotein cholesterol ratio (MHR) have emerged as new prognostic indicators of cardiovascular diseases. However, the predicting effect of the combination of MPVLR and MHR in myocardial infarction has not been reported. OBJECTIVE: The aim of this study was to investigate the usefulness of combination of MPVLR and MHR in predicting patients with AMI. METHODS: 375 patients who had chest pain or stuffiness were retrospectively enrolled in this study. According to the results of coronary angiography and cardiac troponin, patients were divided into AMI group (n = 284) and control group (n = 91). MPVLR, MHR, Gensini score and Grace score were calculated. RESULTS: MPVLR and MHR were significantly higher in AMI group than that in control group (6.47 (4.70–9.58) VS 4.88 (3.82–6.44), 13.56 (8.44–19.01) VS 9.14 (7.00–10.86), P < 0.001, respectively). Meanwhile, both were positively correlated with Gensini score and Grace score. Patients with a high level of MPVLR or MHR had an increased risk for AMI (odds ratio (OR) = 1.2, 95% confidence interval (CI) 1.1–1.4, OR = 1.2, 95% CI 1.2–1.3). Combination of MPVLR and MHR identified a greater ROC area than its individual parameters (P < 0.001). CONCLUSION: Both MPVLR and MHR are independent predictors of AMI. Combination of MPVLR and MHR had higher predicting value in AMI, and thus appears to be a new risk factor and biomarker in the evaluation of risk and severity of atherosclerosis in AMI. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s13019-023-02268-4.