Acute and Chronic Renal Failure · NCLEX Exam

What clinical finding is most characteristic of acute tubular necrosis (ATN)?

  1. Polyuria with dilute urine
  2. Oliguria with muddy brown casts
  3. High specific gravity with proteinuria
  4. Hematuria without casts
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Correct answer: Oliguria with muddy brown casts

ATN presents with oliguria and urine containing muddy brown granular casts due to tubular cell injury.

Difficulty: Medium Question 3 of 20

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