Prerenal acute kidney injury is characterized by:

Question

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B) Decreased renal perfusion leading to elevated BUN/creatinine ratio greater than 20:1 with low fractional excretion of sodium. Prerenal AKI: decreased renal blood flow (dehydration, CHF, shock). BUN:Cr >20:1, FENa <1%, concentrated urine (high specific gravity). Kidneys are intrinsically normal — respond to volume resuscitation.

Prerenal acute kidney injury is characterized by:

✓ Correct Answer: Option B

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