Antimicrobials and Resistance · USMLE Step 1

A patient on aminoglycosides develops nephrotoxicity. What is the primary mechanism?

  1. Damage to proximal tubule cells
  2. Acute interstitial nephritis
  3. Immune-mediated glomerulonephritis
  4. Reduced renal blood flow
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Correct answer: Damage to proximal tubule cells

Aminoglycosides accumulate in proximal tubule cells, causing acute tubular necrosis.

Difficulty: Medium Question 12 of 20

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