Relationship between Systemic Immune-Inflammation Index and Coronary Collateral Circulation in Patients with Chronic

Mehmet Koray Adali1, Ipek Buber1, Gursel Sen1

  • 1Pamukkale University - Faculty of Medicine, Departamento de Cardiologia, Denizli - Turquia.

Insights

High systemic immune-inflammation index (SII) is linked to poor coronary collateral circulation (CCC) in stable coronary artery disease (CAD) patients. This finding may help predict CAD prognosis using readily available inflammatory markers.

Area of Science:

  • Cardiology
  • Immunology
  • Biomarkers

Background:

  • Inflammation is crucial in coronary artery disease (CAD) development and progression.
  • The systemic immune-inflammation index (SII) is an emerging inflammatory marker associated with CAD.

Purpose of the Study:

  • To investigate the association between SII and coronary collateral circulation (CCC) in patients with stable CAD and chronic total occlusion (CTO).

Main Methods:

  • Patients were classified into poor CCC (n=94) and good CCC (n=81) groups based on Rentrop Classification.
  • Inflammatory parameters, including SII, were analyzed from laboratory results.
  • Statistical analysis determined significant associations with a significance level of 0.05.

Main Results:

  • High SII levels (OR: 1.003, p<0.001), absence of CTO in the right coronary artery (OR: 0.204, p<0.001), and low Gensini score (OR: 0.980, p=0.028) were significantly associated with poor CCC.
  • An SII cutoff of 679.96 demonstrated the highest predictive power for poor CCC (sensitivity 74.5%, specificity 43.2%).
  • No significant difference in mortality rates was observed between groups during follow-up (p=0.107).

Conclusions:

  • High SII levels, absence of CTO in the right coronary artery, and low Gensini score are significantly related to poor CCC.
  • The study highlights the potential of SII as a prognostic marker in CAD.
  • Rapid and cost-effective inflammatory markers like SII can guide CAD prognosis in clinical practice.
Abstract

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