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  • Title: Coronary plaque characteristics in patients with mild chronic kidney disease. Analysis by 320-row area detector computed tomography.
    Author: Kawai H, Sarai M, Motoyama S, Harigaya H, Ito H, Sanda Y, Biswas S, Anno H, Ishii J, Murohara T, Ozaki Y.
    Journal: Circ J; 2012; 76(6):1436-41. PubMed ID: 22453001.
    Abstract:
    BACKGROUND: The differences in the coronary plaque characteristics between patients with mild chronic kidney disease (CKD) (estimated glomerular filtration rate [eGFR] 30-59 ml·min(-1) · 1.73 m(-2)) and those without CKD (eGFR ≥60) by 320-row area detector computed tomography (CT) have not been studied. METHODS AND RESULTS: We enrolled 487 patients undergoing coronary CT angiography with suspected stable coronary artery disease (mean age: 66.6±10.8 years, 131 with mild CKD) and analyzed 6,352 segments. All coronary plaques were characterized for the presence of vessel remodeling, plaque consistency and the disposition of coronary calcification, and a plaque with positive vessel remodeling and/or low-attenuation was defined as high risk. The number of diseased segments per patient was higher in mild CKD patients than in those without CKD (4.61±3.83 vs. 2.95±3.11, P<0.0001). The prevalence of severe stenosis (≥70% luminal diameter) was significantly higher in cases of mild CKD than in no CKD (35.1% vs. 19.4%, P=0.0003), but there was no significant difference in the prevalence of high-risk plaque (13.0% vs. 9.8%, P=0.3189). CONCLUSIONS: The severity of coronary artery stenosis was higher in the patients with mild CKD, though there was no significant difference in the prevalence of high-risk plaque. We suggest that the high risk of coronary events in patients with CKD is related to the severity of stenosis rather than to the characteristics of plaque.
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