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Persistent renal enhancement after intra-arterial versus intravenous iodixanol administration.

Abstract：

PURPOSE:To examine the clinical significance of persistent renal enhancement after iodixanol administration. METHODS:We retrospectively studied 166 consecutive patients who underwent non-enhanced abdominopelvic CT within 7 days after receiving intra-arterial (n=99) or intravenous (n=67) iodixanol. Renal attenuation was measured for each non-enhanced CT scan. Persistent renal enhancement was defined as CT attenuation>55 Hounsfield units (HU). Contrast-induced nephropathy (CIN) was defined as a rise in serum creatinine>0.5 mg/dL within 5 days after contrast administration. RESULTS:While the intensity and frequency of persistent renal enhancement was higher after intra-arterial (mean CT attenuation of 73.7 HU, seen in 54 of 99 patients, or 55%) than intravenous contrast material administration (51.8 HU, seen in 21 of 67, or 31%, p<0.005), a multivariate regression model showed that the independent predictors of persistent renal enhancement were a shorter time interval until the subsequent non-enhanced CT (p<0.001); higher contrast dose (p<0.001); higher baseline serum creatinine (p<0.01); and older age (p<0.05). The route of contrast administration was not a predictor of persistent renal enhancement in this model. Contrast-induced nephropathy was noted in 9 patients who received intra-arterial (9%) versus 3 who received intravenous iodixanol (4%), and was more common in patients with persistent renal enhancement (p<0.01). CONCLUSION:Persistent renal enhancement at follow-up non-contrast CT suggests a greater risk for contrast-induced nephropathy, but the increased frequency of striking renal enhancement in patients who received intra-arterial rather than intravenous contrast material also reflects the larger doses of contrast and shorter time to subsequent follow-up CT scanning for such patients.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Chou SH,Wang ZJ,Kuo J,Cabarrus M,Fu Y,Aslam R,Yee J,Zimmet JM,Shunk K,Elicker B,Yeh BM

doi

10.1016/j.ejrad.2011.02.044

subject

Has Abstract

pub_date

2011-11-01 00:00:00

pages

378-86

issue

2

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(11)00230-0

journal_volume

80

pub_type

杂志文章

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