Objective
ST-segment elevation myocardial infarction (STEMI) is a serious,
life-threatening disease. Inflammatory markers have recently become the
focus of attention in the assessment of severity in the early stages of
STEMI. This study aimed to evaluate the importance of immature granulocytes
(IG) as a prognostic marker in STEMI.
Methods
Patients admitted to the coronary care unit with a diagnosis of STEMI and who
underwent primary percutaneous coronary intervention (pPCI) within the
period from January 1, 2019 to January 1, 2020, were retrospectively
scanned. A total of 146 patients were analised; of these, 112 (76.7%) were
male and 34 (33.3) were female, with a mean age of 62.65±14.06 years.
Patients’ age, gender, haemogram, biochemistry, and mortality results were
recorded. The patients were divided into two groups as low (<0.6) and
high (≥0.6) IG levels and compared.
Results
The mean IG levels were significantly higher in the non-survivor group
compared to the survivor group (1.12±0.22 vs. 0.50±0.28,
P<0.001). Mortality rates were significantly higher in the high IG group
compared to the low IG group (26.9% vs. 9.6%, P=0.006). IG was shown to
predict mortality with a sensitivity of 72.2% and a specificity of 77.8% at
a cut-off value of 0.65 (area under the curve: 0.740, 95% CI: 0.635-0.846,
P<0.001).
Conclusion
High IG values in the blood collected at the time of admission to the
emergency department are a marker of mortality in patients with STEMI.