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  • Title: Contrast-induced nephropathy following chronic total occlusion percutaneous coronary intervention in patients with chronic kidney disease.
    Author: Liu YH, Liu Y, Tan N, Chen JY, Zhou YL, Luo JF, Yu DQ, Li LW, Li HL, Ye P, Ran P.
    Journal: Eur Radiol; 2015 Aug; 25(8):2274-81. PubMed ID: 25981215.
    Abstract:
    OBJECTIVES: Contrast-induced nephropathy (CIN) has not been systematically studied in high-risk patients with chronic kidney disease (CKD) undergoing percutaneous coronary intervention (PCI) for chronic total occlusion (CTO). METHODS: We prospectively observed 515 consecutive patients with CKD undergoing PCI. Patients were divided into three groups: patients who underwent attempted PCI for CTO (group A, n = 85), patients who did not receive PCI for CTO (group B, n = 45) and patients without CTO (group C, n = 385). RESULTS: CIN developed in 55 patients (10.68 %). Group A patients received a larger CM dose than group B or group C (p = 0.024). The intravenous hydration volume, age and CIN Mehran score were not significantly different between the three groups. The incidence of CIN was 9.4 % for group A, 6.7 % for group B and 11.4 % for group C (p = 0.344). In-hospital mortality and required renal replacement therapy (p = 0.325) were not significantly different between the groups. Multivariate analysis showed that after adjusting for potential confounding factors, the odds ratio for CIN was 1.03 (p = 0.944) for group A and 0.64 for group B (p = 0.489) compared to group C. CONCLUSIONS: Attempts to achieve recanalization of CTO in patients with CKD might not increase the risk of CIN if appropriate preventative measures are taken. KEY POINTS: • Contrast-induced nephropathy can increase morbidity and mortality • Chronic kidney disease patients are at the greatest risk of CIN • Patients with CKD undergoing CTO-PCI are common • Incidence of CIN has not been reported in CKD patients • CTO-PCI in CKD patients might not increase the risk of CIN.
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