NDT Advance Access originally published online on February 5, 2008
Nephrology Dialysis Transplantation 2008 23(4):1233-1240; doi:10.1093/ndt/gfm725
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Comparison between gadolinium and iodine contrast for percutaneous intervention in atherosclerotic renal artery stenosis: clinical outcomes
1 Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA 2 Department of Radiology, Mayo Clinic College of Medicine, Rochester, MN, USA 3 Charles University, Hradec Karlove, Czech Republic 4 Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA
Vesna D. Garovic, Division of Nephrology and Hypertension, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. Tel: +1-507-284-8045; Fax: +1-507-284-1161; E-mail: garovic.vesna{at}mayo.edu
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Abstract |
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Background. Percutaneous angiography with iodinated contrast in patients with chronic kidney disease carries a risk of contrast nephropathy, which is independently associated with renal disease progression and increased mortality. Gadolinium contrast is a potential alternative to iodinated contrast for percutaneous transluminal renal angioplasty (PTRA), and appears to be safe and well tolerated. The aim of this study was to assess the results of gadolinium use to facilitate PTRA in patients with chronic kidney disease.
Methods. Clinical outcomes were compared between patients with serum creatinine (Cr) 
176 µmol/L (2 mg/dL), who had either gadolinium (n = 57; gadoteridol or gadodiamide), iodinated (n = 68; iohexol or iodixanol) or a combination of gadolinium and iodinated-contrast-enhanced (n = 38) PTRA.
Results. Despite similar degrees of pre-procedural renal insufficiency, the incidence of immediate contrast nephropathy [defined as an increase in serum Cr of 44 µmol/L (0.5 mg/dL) within 7 days without other identifiable causes] was lowest in the gadolinium group (3/57, 5.3%) compared to those receiving a combination of modest iodinated contrast in addition to gadolinium (4/38, 10.5%) or solely iodinated contrast (14/68, 20.6%). This was associated with a reduction in the 30-day progression to need for renal replacement therapy (RRT) (P < 0.005). Yet, over a mean follow-up of 40 ± 22 months, renal function outcomes or all-cause mortality were not different between the contrast groups. The type of contrast used had no effect on technical success and both short- and long-term blood pressure outcomes were comparable between the groups. Two patients developed pathology-proven nephrogenic fibrosing dermopathy, a serious skin condition that has been seen in patients with kidney disease following administration of gadolinium.
Conclusions. Gadolinium contrast appears to be an effective agent for interventional renal angiograms. Compared to iodinated contrast, gadolinium contrast is associated with a significantly lower incidence of contrast nephropathy and early progression to end-stage renal disease (ESRD) in patients with pre-existing chronic kidney disease. The risk of fibrosing dermopathy however and remains to be established.
Keywords: atherosclerotic renal artery stenosis; contrast media; contrast nephropathy; gadolinium angiography; ischaemic nephropathy; percutaneous transluminal angioplasty
Received for publication: 1. 2.07
Accepted in revised form: 18. 9.07
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