Generalized Fatigue in Medicine / Internal Medicine — 70yo Man | Nephrology | SMLE Q#12264
SMLE Question #12264
Medicine / Internal Medicine
Nephrology
Objective: OBJ-188
Last updated: February 2026
A 70-year-old man presents to the Emergency Department with generalized fatigue and mildly reduced urine output 2 days after a contrast-enhanced CT brain scan for suspected transient ischemic attack. He has no known chronic kidney disease and takes no regular nephrotoxic medications. Physical examination is unremarkable. Urinalysis shows granular casts with minimal protein and no hematuria. What is the most likely mechanism of his acute kidney injury?
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