Research Information System
ARQUIVOS BRASILEIROS DE CARDIOLOGIA, vol.120, no.1, 2023 (SCI-Expanded)
Background: The underlying pathology of isolated coronary artery ectasia (CE) has not been fully elucidated.Objective: We aimed to examine the relationship between the systemic immune inflammation index (Sii), which corresponds to the multiplying of the neutrophil-to-lymphocyte ratio (NLR) and the platelet counts, and isolated CE.Method: The retrospective study population included 200 patients with isolated CE, 200 consecutive with obstructive coronary artery disease, and 200 consecutive with a normal coronary artery angiogram. A 2-sided p-value of <0.05 was considered significant. Results: Sii, NLR, platelet-to-lymphocyte ratio (PLR), and monocyte-to-high density lipoprotein cholesterol ratio (MHR) were significantly higher in the CE group compared with the other groups (all p<0.001). In multivariate analysis, Sii (p<0.001, OR = 1.005, 95% CI =1.004-1.005) was found to be an independent predictor of isolated CE. In Receiver Operating Characteristic curve analysis, Sii had a higher Area Under the Curve than NLR, PLR, and MHR. Sii value of >517.35 has 79% sensitivity, 76% specificity for the prediction of the CE [AUC: 0.832, (p<0.001)]. Sii had a significant correlation with the number of ectatic coronary arteries and Markis classification (r:0.214 p=0.002; r:-0.195, p=0.006, respectively).Conclusion: To the best of our knowledge, this is the first study that Sii was significantly associated with isolated CE presence and anatomical severity.