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General Medicine General 6a70538e

A 63-year-old man becomes oliguric 2 days following an open cholecystectomy. Which of the following findings would suggest that prerenal ARF is a major factor in the etiology?

A
postural hypotension
B
fractional excretion of sodium is 3%
C
specific gravity is 1.012
D
the urine sodium is 30 mEq/L

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