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Published on: January 28, 2020
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.
Background:
Inflammation plays a key role in the initiation and progression of coronary artery disease (CAD). The systemic immune-inflammation index (SII) is a novel inflammatory parameter that has been shown to be associated with CAD.
Objective:
This study aimed to investigate the relationship between SII and coronary collateral circulation (CCC) in patients with stable CAD and chronic total occlusion (CTO).
Methods:
The patients were divided into two groups, with poor CCC and good CCC, according to the Rentrop Classification. Ninety-four patients had poor CCC, and 81 patients had good CCC. Inflammation parameters were calculated from the laboratory results. The statistical significance level applied was 0.05.
Results:
High SII level (OR: 1.003, 95% CI: 1.001-1.004, p<0,001), absence of CTO in RCA (OR: 0.204, 95% CI: 0.096-0.436, p<0,001) and low Gensini score (OR: 0.980, 95% CI: 0.962-0.998, p=0,028) were significantly associated with poor CCC. The cutoff value of SII was 679.96 for the highest predictive power of poor CCC, with a sensitivity of 74.5% and specificity of 43.2%. Mortality rates were similar between the two groups during a mean follow-up of 21.5±10.8 months (p=0.107).
Conclusions:
High SII level, the absence of CTO in the right coronary artery, and low Gensini score were significantly related to poor CCC. The rapid and cost-effective use of new inflammatory markers in clinical practice guides the prognosis of CAD.
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