Aim: Platelet-to-lymphocyte ratio (PLR) has emerged as a strong marker of worse outcomes. We determined the association between PLR and clinical outcomes in patients with diabetes mellitus and ST-elevation myocardial infarction.
Methods: Five hundred and twenty three patients were enrolled. Low PLR (group 1, n = 349) was defined as ≤ 124 and high PLR (group 2, n = 174) as >124.
Results: In-hospital and 1-year mortality was higher in group 2. Receiver operating characteristic analysis revealed moderate diagnostic value in predicting in-hospital (PLR cut-off >155) and long-term (PLR cut-off >146) death. PLR remained an independent risk factor of early and late mortality.
Conclusion: PLR proved to have good prognostic value for in-hospital and late mortality. PLR cut-off value for predicting in-hospital mortality was higher to that predicting late mortality. PLR remained an independent risk factor early and late mortality.
Keywords: diabetes mellitus; myocardial infarction; platelet-to-lymphocyte ratio; prognosis.