Abstract
Background Detection of potentially vulnerable plaques inducing acute coronary syndrome (ACS) improves prevention of cardiovascular events. We aimed at using intravascular ultrasound (IVUS) for morphological assessment, anatomical significance of atherosclerotic plaques of nonculprit intermediate coronary lesions and correlation with quantitative coronary angiography (QCA) in ACS. Patients and methods 2IVUS was performed on 61 nonculprit intermediate coronary lesions in 28 patients diagnosed with non-ST-elevation ACSs. Percent area stenosis more than 70% was the cutoff value for intervention. Results The mean age was 53.2±9.1 years, men=20 (71.4%). Culprit vessels represent 42% of affected vessels. Higher lipid content was found in lesions of culprit vessels (P Conclusion IVUS might be valuable for the assessment of nonculprit lesions in ACS. There is high vulnerability for plaque rupture in intermediate lesions of culprit vessels. MLA and plaque burden are the main predictors for lesion anatomical significance. QCA is a reliable tool for detecting severity of coronary artery disease.
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