Q1 · Acute Kidney Injury
NEET PGMediumA patient with oliguria, a high urine osmolality and a low fractional excretion of sodium below 1% most likely has?
Explanation
Pre-renal AKI from hypovolaemia shows avid sodium and water retention: concentrated urine with high osmolality and a fractional excretion of sodium below 1%. In acute tubular necrosis the tubules cannot conserve sodium, so it exceeds 2%.