Acute Kidney Injury USMLE Step 1 Practice Question
A 52-year-old man with recent cardiac catheterization for acute coronary syndrome develops acute kidney injury the next morning. His creatinine rises from 1.0 to 2.8 mg/dL in 24 hours. Urinalysis shows fine granular casts and muddy brown appearance. He has no fever or rash. Which of the following is the most likely diagnosis?
Answer choices
- AContrast-induced acute tubular necrosisCorrect answer
- BAcute interstitial nephritis
- CSepsis from catheterization
- DCholesterol embolization syndrome
- EPrerenal acute kidney injury
- FAcute glomerulonephritis from immune complex deposition
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