Systemic Coagulation Inflammation Index Associated With Bleeding in Acute Coronary Syndrome.

Assessment of the inflammatory component of acute coronary syndrome (ACS) and the degree of activation of the coagulation cascade may provide prognostic information. The systemic coagulation-inflammation index (SCI) assesses both inflammation and the coagulation system, and it has also been found to be associated with clinical outcomes. We investigated the relationship between SCI and in-hospital clinical events (acute kidney injury, cardiogenic shock, life-threatening arrhythmia, bleeding) and mortality. The study included 396 patients aged ≥18 yrs who were hospitalized with a diagnosis of ACS. The SCI was calculated using the formula: platelet count (103 / µl) X fibrinogen (g / l) / white blood cell (WBC) count (103 / µl). Patients were divided into two groups according to whether their SCI score was >100 or <100, and the relationship between clinical and laboratory characteristics was analyzed accordingly. The mean age of the patients was 61.4±12.2 years and 78.3 % (n=310) were male. The type of ACS was NSTEMI in 56.1 % (n=222). The responsible vessel was the left anterior descending artery (LAD) in 42.4 % of the patients (n=168). The mean SCI score was 97.5±47.1. WBC, neutrophil, and lymphocyte counts were higher in the SCI <100 group, whereas fibrinogen, C-reactive protein, and platelet count were higher in the SCI >100 group. Bleeding from any cause as an in-hospital complication was significantly higher in patients with SCI >100 (p<0.05). Other in-hospital events were not significantly associated with SCI (p>0.05). Bleeding in ACS patients was significantly more common in the group with SCI >100. Thus, SCI may be a useful parameter for predicting in-hospital bleeding complications in ACS. On the other hand, SCI was not associated with mortality and other in-hospital clinical events.