Vol 5, No 4 (2020)
Research paper
Published online: 2020-11-24

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Is platelet to monocyte ratio a useful inflammatory determinant of ST-elevation myocardial infarction?

İbrahim Çaltekin1, Erdal Demirtaş2
Disaster Emerg Med J 2020;5(4):205-211.


INTRODUCTION: The main factors in the development of ST-segment elevation myocardial infarction (STEMI) are inflammatory processes and pathophysiological changes due to oxidant stress. The aim of this study is to evaluate the association of prevalent STEMI with markers of inflammatory and oxidative stress. The platelet to monocyte ratio (PMR) was evaluated as a new hematological inflammatory marker.

MATERIAL AND METHODS: The study is a retrospective observational study conducted in the emergency department between January 2018 and January 2019. In the study, all patients who were diagnosed with STEMI were considered in the study group. Evaluations of inflammatory and oxidant stress markers, PMR value of STEMI patients were performed.

RESULTS: Neutrophil to lymphocyte ratio (NLR) value of 5.63 (3.35–7.84), Monocyte count to high-density lipoprotein cholesterol ratio (MHR) value of 16.10 (12.73–19.52), gamma-glutamyl transferase (GGT) value of 31.00 (21–39) and CRP value of 5.10 (2.77–9.34) were significantly higher in STEMI cases (p < 0.005). The lymphocyte to monocyte ratio (LMR) value of 2.57 (2.00–3.61) and the PMR value of 24.52 ± 7.60 in STEMI cases were significantly lower (p < 0.001, p = 0.014).

CONCLUSIONS: In STEMI patients NLR, GGT, and MHR rates increase significantly and LMR decreases. PMR values were also lower in STEMI cases. This shows us that PMR is a new determinant that can be used in inflammatory events. However, none of these inflammatory markers and oxidant stress markers can be used as diagnostic tests, rather they should be considered as surrogate markers for disease.

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Disaster and Emergency Medicine Journal