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Diabetes with preserved renal function is an independent risk factor for renal function deterioration after coronary computed tomography angiography



Diabetes with preserved renal function is an independent risk factor for renal function deterioration after coronary computed tomography angiography



Journal of Computer Assisted Tomography 37(5): 750-754



Diabetes mellitus (DM) and high fasting glucose levels are reportedly risk factors for contrast-induced nephropathy after invasive coronary angiography in patients with renal dysfunction. Cystatin C (CyC) is a sensitive marker for detecting early impairment of renal function. Using CyC, we investigated whether DM would be a risk for worsening renal function after coronary computed tomography angiography (CCTA) in patients with preserved renal function. Two hundred twenty-eight patients scheduled for CCTA were enrolled. The serum CyC at preprocedure and 1 day after procedure, urinary microalbumin at preprocedure, and oral fluid volume for 24 hours after procedure were measured. The percentage changes in CyC from preprocedure to 1 day after procedure (%CyC) were also calculated. Ninety-eight patients had DM. The %CyC and urinary microalbumin were significantly greater in DM patients than in non-DM patients. The percentage of patients showing a %CyC of 10% or greater was significantly greater in DM patients than in non-DM patients (27% vs 8%, P < 0.01). Using multivariate regression analysis, oral fluid volume and urinary microalbumin were independent predictors for a %CyC of 10% or greater in DM patients (β = - 0.428 [P < 0.0001] and β = 0.464 [P < 0.0001], respectively). Diabetes mellitus is a risk factor for worsening changes in renal function after CCTA, even in patients with preserved renal function. In particular, elevated microalbuminuria and low oral fluid intake are high-risk factors for renal functional deterioration.

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Accession: 052574126

Download citation: RISBibTeXText

PMID: 24045252

DOI: 10.1097/RCT.0b013e31829a49aa


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