fractional excretion of sodium


Also found in: Acronyms.

fractional excretion of sodium (FENa)

an assessment of acute renal failure comparing the sodium clearance with the creatinine clearance.

fractional excretion of sodium

The urinary sodium concentration multiplied by the plasma creatinine concentration multiplied by 100, all divided by the product of the plasma sodium concentration and the urinary creatinine concentration.
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These would include peak flow calculations for asthmatics, fractional excretion of sodium for renal tubular function determination, Ranson's score in acute pancreatitis, and alveolar-arterial [Po.

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