Mansıroğlu, Aslı KurtarSincer, İsaYılmaz, Güneş2021-06-232021-06-2320201806-9282https://doi.org/10.1590/1806-9282.66.7.954https://hdl.handle.net/20.500.12491/10413OBJECTIVE: Inflammation-related markers provide diagnostic and prognostic information for coronary artery disease and acute coronary syndrome. We aimed to compare neutrophil count and neutrophil/lymphocyte ratio (NLR) in acute coronary syndrome patients with coronary collateral development in our study. METHODS: A total of 426 patients (102 unstable angina pectoris (USAP), 223 non-ST-elevation myocardial infarction (non-STEM!), 103 ST-elevation myocardial infarction (STEMI) were compared regarding hemoglobin, platelet, lymphocyte, neutrophil count, and NLR. RESULTS: Neutrophil count and NLR were significantly lower in USAP patients and higher in STEMI patients; 5.14 +/- 1.79 vs. 721 +/- 3.05 vs. 9.93 +/- 4.67 and 2.92 +/- 2.39 vs. 5.19 +/- 4.80 vs. 7.93 +/- 6.38, p <0.001. Other parameters, i.e., hemoglobin, platelet, and lymphocyte count, were not significantly different between the groups. CONCLUSIONS: In our study, it was concluded that there may be a statistically significant difference in the number of neutrophil counts and NLR among the types of acute coronary syndromes with coronary collateral development.eninfo:eu-repo/semantics/openAccessAcute Coronary SyndromeCollateral CirculationNeutrophilsLymphocytesArticle10.1590/1806-9282.66.7.954667954959328449362-s2.0-85089923020N/AWOS:000562623600020Q4