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Abstract #4026

Early Changes in Renal Hypoxia Following Iodinated Contrast: Need for Real-time Monitoring

Lu-Ping Li 1,2 , Jing Lu 2,3 , Tammy Franklin 1 , Ying Zhou 4 , Richard Solomon 5 , and Pottumarthi V. Prasad 1,2

1 Department of Radiology / Center for Advanced Imaging, Northshore University Healthsystem, Evanston, IL, United States, 2 Pritzker School of Medicine, University of Chicago, Chicago, IL, United States, 3 Department of Obstetrics and Gynecology, Northshore University Healthsystem, Evanston, IL, United States, 4 Center for Clinical & Research Informatics, Northshore University Healthsystem, Evanston, IL, United States, 5 Nephrology, University of Vermont, VT, United States

The current clinical marker (serum creatinine) is not time-sensitive to guide intervention to prevent iodinated contrast induced acute kidney injury (CIAKI). Blood-oxygenation-level dependent (BOLD) MRI showed near real time changes in renal hypoxia following contrast administration in a previous functional CIAKI rat model. In this study, streptozotocin induced diabetic rat was used as a CIAKI susceptible model. While the renal hypoxia in medulla increased following contrast administration, it fell back towards baseline. Urinary NGAL increasing confirmed AKI. This indicates the need for real time marker to monitor the temporal changes of renal hypoxia during contrast administration.

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