Renal and Urinary: Glomerulonephritis, AKI · USMLE Step 1

A man with BPH develops postrenal AKI. Which finding is most likely in early obstruction?

  1. Decreased GFR and decreased RBF
  2. Decreased GFR and increased RBF
  3. Increased GFR and increased RBF
  4. Increased GFR and decreased RBF
Show answer and explanation

Correct answer: Decreased GFR and increased RBF

Early obstruction increases tubular pressure, decreasing GFR but increasing renal blood flow due to vasodilation.

Difficulty: Medium Question 6 of 20

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