TITLE

Mortality Associated With Nephropathy After Radiographic Contrast Exposure

AUTHOR(S)
From, Aaron M.; Bartholmai, Brian J.; Williams, Amy W.; Cha, Stephen S.; McDonald, Furman S.
PUB. DATE
October 2008
SOURCE
Mayo Clinic Proceedings;Oct2008, Vol. 83 Issue 10, p1095
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
OBJECTIVE: To define outcomes from contrast-Induced nephropathy (CIN) after both intra-arterial and intravenous administration of contrast medium. PATIENTS AND METHODS: We performed a retrospective case- matched cohort study at Mayo Clinic's site In Rochester, MN, from April 1, 2004, to March 31, 2006. All contrast procedures were evaluated for inclusion. Contrast-induced nephropathy was defined as creatinine elevation of 25% or more after contrast exposure or of more than 0.5 mg/dL within 7 days of contrast exposure. Cases of CIN were matched 1:3 with controls by age, sex, preprocedure creatinine elevation, diabetes mellitus, and type of Imaging procedure. RESULTS: A total of 809 patients who developed CiN were matched to 2427 patients who did not develop CIN after contrast exposure. in multivariate analyses, CiN was significantly associated with 30-day mortality (odds ratio, 3.37; 95% confidence interval [Cl], 2.58-4.41; P<.001) and overall mortality (hazard ratio, 1.57; 95% CI, 1.32-1.86; P<.001) after adjustment for heart failure, hypertension, medications, total hydration, iodine ioad, prior contrast exposure, and au matched variables during the study period, intravenous contrast administration was a risk factor for 30-day mortality (odds ratio, 2.91; 95% CI, 1.17-7.23; P=.02) and overall mortality (hazard ratio, 3.02; 95% CI, 1.89- 4.82; P<.001) compared with intra-arterial administration of contrast after adjustment for heart failure, hypertension, medications, total hydration, iodine load, prior contrast exposure, and all matched variables during the study period. CONCLUSION: Contrast-Induced nephropathy after administration of contrast medium is associated with increased mortality. This risk is higher in patients In whom contrast medium is administered Intravenously than In those in whom It Is administered intra-arterially.
ACCESSION #
34633269

 

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