Fractional excretion of sodium < 1 is seen in
Correct Answer: Pre renal azotemia
Description: Ans. is 'a' i.e., Pre renal azotemia * Urine Diagnostic Indices in differentiation of prerenal Vs Intrinsic Renal FailureDiagnostic IndexPrerenalARFIntrinsic Renal ARF* Fractional Excretion of Na<1> 1* Urine Sodium Concentration (mmol/L)<10>20* Urine Creatinine to Plasma Creatinine ratio>40<20* Urine osmolality (mosmol/kgH20)>500~ 300* Renal failure Index<1>1* Urine urea Nitrogen to plasma urea Nitrogen>8<3* Plasma BUN/Creatinine Ratio>20< 10-15* Urinary SedimentHyalineCastsMuddy Brown Granular Cast* Urine Specific gravity> 1.020-1.010o Acute tubular necrosis is a cause of intrinsic ARF.
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