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  • Title: Incidence of contrast-induced acute kidney injury associated with diagnostic or interventional coronary angiography.
    Author: Morabito S, Pistolesi V, Benedetti G, Di Roma A, Colantonio R, Mancone M, Sardella G, Cibelli L, Ambrosino M, Polistena F, Pierucci A.
    Journal: J Nephrol; 2012; 25(6):1098-107. PubMed ID: 22383347.
    Abstract:
    BACKGROUND: Contrast-induced acute kidney injury (CI-AKI) represents an important cause of hospital-acquired AKI. The aim of this study was to evaluate the incidence of CI-AKI after coronary angiography (CA) or percutaneous coronary intervention (PCI) and the role of patient-/procedure-related risk factors. METHODS: For 11 months, patients undergoing CA or PCI were prospectively evaluated for CI-AKI, and factors possibly affecting CI-AKI were analyzed. Statistical analysis was completed using Student's t-test, chi-square or Fisher exact test, and multivariate logistic regression. RESULTS: Among 585 consecutive patients, incidence of CI-AKI was 5.1% (n=30) and renal replacement therapy was required in 10% of those (n=3). Incidence of CI-AKI was higher in patients with anemia or chronic kidney disease (CKD) associated with diabetes. Basal hemoglobin was significantly lower in CI-AKI patients while Mehran score, contrast medium (CM) volume, contrast ratio (CM volume / maximum contrast dose) and ratio glomerular filtration rate (CM volume / GFR) were significantly higher. Multivariate analysis selected a higher contrast ratio as a factor independently associated with a higher risk of CI-AKI which otherwise appeared to be lower with increasing basal hemoglobin. CONCLUSIONS: The incidence of CI-AKI after CA or PCI was higher in patients with CKD associated with diabetes. Lower levels of basal hemoglobin appeared to be related to a higher risk of CI-AKI, and contrast media volume, especially if exceeding the dose adjusted for renal function, was a strong modifiable risk factor for CI-AKI.
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