Restricted accessResearch articleFirst published online 2015-9
Impact of Serum Albumin Levels on Contrast-Induced Acute Kidney Injury in Patients With Acute Coronary Syndromes Treated With Percutaneous Coronary Intervention
Patients with acute coronary syndromes (ACSs) undergoing percutaneous coronary intervention (PCI) are at high risk of contrast-induced acute kidney injury (CI-AKI), a complication associated with poor clinical outcomes. Serum albumin (SA) levels are associated with cardiovascular mortality. We assessed the association between SA levels and the risk of CI-AKI in patients with ACS (n = 890) treated with PCI. Patients were divided into 2 groups: patients with and without CI-AKI. Contrast-induced acute kidney injury was defined as an increase in serum creatinine (≥25% or ≥0.5 mg/dL) from baseline occurring 72 hours after PCI. The SA levels were significantly lower in patients with CI-AKI than in those without CI-AKI (3.52 ± 0.40 vs 3.94 ± 0.39 mg/dL, P < .001). On multivariate analysis, SA was an independent predictor of CI-AKI (odds ratio 0.177, 95% confidence interval 0.080-0.392, P < .001) together with age, female gender, creatine kinase-myocardial band, and glomerular filtration rate. Baseline SA levels are inversely associated with CI-AKI after PCI for ACS.
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