Which urinalysis finding is most consistent with acute tubular injury rather than prerenal kidney injury?
Correct answer: B. Muddy brown granular casts in the urine
- A. Concentrated urine with a high specific gravity
- B. Muddy brown granular casts in the urine
- C. Small urine volume after fluid loss
- D. Clear urine with no abnormal sediment
Explanation
Muddy brown granular casts are associated with tubular epithelial injury and acute tubular necrosis, an intrinsic kidney injury. Prerenal injury commonly produces concentrated urine because the kidneys retain water.
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About Renal and Urological Nursing
Covers assessment and care for urinary tract infection, glomerulonephritis, nephrotic syndrome, acute kidney injury, chronic kidney disease, renal stones and urinary obstruction. The subject includes intake and output, urinalysis, fluid restriction, dialysis care and the difference between prerenal, intrinsic and postrenal kidney injury.
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