eosinophil percentage and platelet counts: association with in-hospital mortality in st-segment elevated myocardial infarction

Background: st-segment elevation myocardial infarction (stemi) results from coronary artery blockage due to ruptured atherosclerotic plaque. eosinophils play a dual role in stemi, contributing to thrombus formation and tissue repair. this study investigates the association between eosinophil percentage, platelet counts, and in-hospital prognosis in stemi patients.methods: a cross-sectional study was conducted from september 2019 to february 2020, including patients aged 18 and above with a stemi diagnosis. in-hospital mortality, arrhythmia, and left ventricular ejection fraction (lvef) were recorded. demographic data, clinical manifestations, and laboratory investigations were collected. data were analyzed using spss (version 25.0), with a p value of <0.05 considered significant.results: the study included 100 stemi patients with a mean age of 65±13.26 years; 75% were male. the mortality rate was 13%. a significant relationship was found between eosinophil percentage and mortality (p=0.032), and platelet count also correlated significantly with mortality (p=0.008). the association between eosinophil percentage and ef was significant (p<0.001). the area under the roc curve was 0.705 (95% ci 0.605 - 0.792) for platelet counts and 0.679 (95% ci 0.577 - 0.770) for eosinophil percentage in differentiating live and expired patients.conclusion: platelet count could be a significant prognostic indicator for in-hospital outcomes in stemi patients, suggesting an increased risk of mortality. additionally, there is a notable relationship between eosinophil percentage and ejection fraction (ef).