Klein A, Wiberg S, Hassager C, et al. - Researchers intended to determine if there is a connections between neutrophil count and neutrophil/lymphocyte ratios (NLR) with the development of cardiogenic shock (CS) as well as 30-day mortality in ST-elevation myocardial infarction (STEMI) patients. Individuals admitted with STEMI at two tertiary Heart Centres throughout 1 year were involved and stratified into quartiles according to the level of leukocyte count upon admission. It included a total of 1,892 STEMI patients, of whom 194 developed CS and 122 died within 30 days. High neutrophil levels and a high NLR upon admission for STEMI were independently linked to an increased risk of late CS development and, in addition, both biomarkers showed a relationship with 30-day mortality.