期刊
INVESTIGATIVE RADIOLOGY
卷 40, 期 9, 页码 598-603出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.rli.0000174476.62724.82
关键词
contrast media; kidney failure; risk factors; iodixanol
Objectives: Identification of risk factors is important for preventing radiocontrast-induced nephropathy (RCIN). Contrast dose and renal function have been shown in most but not all studies to be risk factors for RCIN. We are investigating the ratio of contrast dose to creatinine clearance (D/CrCL) as a risk indicator. Theory shows that the D/CrCL ratio equals the area under the concentration-time curve (AUC), an accepted measure of systemic exposure. This study investigated the correlation between calculated D/CrCL and experimentally measured AUC for the contrast agent iodixanol. Materials and Methods: Experimental data on AUC from a phase I study of iodixanol were plotted against the D/CrCL ratio and the degree of correlation was determined. Results: Experimentally determined AUC data correlate highly with the D/CrCL ratio. Conclusions: The D/CrCL ratio is a rapid and accurate way to estimate AUC for an iodinated x-ray contrast agent without the need for multiple blood samples.
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