Increased pre-procedural urinary microalbumin is associated with a risk for renal functional deterioration after coronary computed tomography angiography

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• 作者：Satoshi Isobe^a ; ^{sisobe@med.nagoya-u.ac.jp} ; Miyuki Yuba^a ; Hiroaki Mori^b ; Susumu Suzuki^b ; Kimihide Sato^c ; Hideki Ishii^b ; Toyoaki Murohara^b
• 关键词：Cystatin C ; Urinary microalbumin ; Oral fluid volume ; Renal function ; Coronary computed tomography angiography
• 刊名：International Journal of Cardiology
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：230
• 期：Complete
• 页码：599-603
• 全文大小：347 K
• 卷排序：230

文摘

Urinary microalbumin is a marker for preclinical nephropathy. A percentage change in cystatin C (%CyC) of ≥ 10% for 24 h after tests with contrast media is reportedly an independent predictor for developing contrast-induced nephropathy. We investigated the relationship between the presence of urinary microalbumin and changes in CyC after coronary computed tomography angiography (CCTA).MethodsThree hundred and thirty-three patients with known or suspected coronary artery disease who scheduled for CCTA using a 70 mL of Iopamidol were enrolled. Serum creatinine and CyC levels were measured at baseline and 24 h post-procedure. The %CyC, absolute changes in estimated glomerular filtration rate (ΔeGFR), and oral fluid volume from pre- to post-procedure were calculated. The patients were dichotomized into 2 groups as follows: group A comprised 83 patients showing a %CyC of ≥ 10%; and group B comprised 250 patients showing a %CyC of < 10%.ResultsThe ΔeGFR, fasting plasma glucose levels, HbA1c, and pre-procedural urinary microalbumin levels were significantly greater in group A than in group B. Oral fluid intake volume was significantly less in group A than in group B. The urinary microalbumin significantly correlated with %CyC (r = 0.504, P < 0.0001). Multivariate logistic regression analysis revealed that pre-procedural urinary microalbumin and oral fluid volume were independent predictors for %CyC ≥ 10%. The optimal cut-off value of a pre-procedural urinary microalbumin level was 58 mg/g·creatinine for predicting a %CyC ≥ 10% using receiver-operating-characteristic analysis.ConclusionsRenal functional changes should be carefully paid attention to after CCTA, particularly in patients exhibiting increased pre-procedural urinary microablumin levels.