Özet:

Aim: The inflammatory milieu plays a triggering role in the development of acute stent thrombosis (ST), which occurs as a catastrophic complication following percutaneous coronary intervention (PCI) in patients with acute coronary syndrome (ACS). This study aimed to investigate the prognostic role of multi-inflammatory index (MII), a powerful new marker of inflammation, in predicting of high SYNTAX score, acute ST and in-hospital mortality in patients with ACS undergoing PCI. Material and Method: This retrospective study included 1488 consecutive patients with ACS undergoing PCI, and definitive ST was determined according to Academic Research Consortium criteria. Inflammation indices were calculated as follows: Systemic immune inflammation (SII)=neutrophil×platelet/lymphocyte ratio, CAR=CRP/albumin ratio, MII-1=platelet×CRP/lymphocyte ratio, MII-2=neutrophil×CRP/lymphocyte ratio, MII-3=SII×CRP. Results: The incidence of acute ST was 3.6%. All inflammation indices was higher in the acute ST group and high SYNTAX score group. Multivariable regression analysis showed that MII-3 independent predictors of acute ST and high SYNTAX score. MII-3 exhibited better diagnostic performance than other inflammatory indices. The threshold value of MII-3 in predicting acute ST was >9084 (AUC=0.842, sensitivity=87.3%, specificity=%77.8) and patients with MII-3 >9084 had a 3.73-fold greater risk of mortality. Conclusion: MII-3 is a stronger predictor of acute ST following PCI and it is associated with an increased risk of mortality. MII may be an essential prognostic screening tool for identifying high-risk patients prior to procedure.

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