Systemic Immune Inflammation Index is a Novel Marker in Predicting the Presence and Severity of Isolated Coronary Artery Ectasia

Abstract 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 (Sıı), 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 517.35 has 79% sensitivity, 76% specificity for the prediction of the CE [AUC: 0.832, (p