Fractional Excretion of Sodium (FENa)
Determines if renal failure is due to pre-renal, intrinsic, or post-renal pathology.
Do not use in patients taking diuretics or with known chronic kidney disease, urinary tract obstruction, or acute glomerular disease. Use FEUrea in patients on diuretics.
When to Use
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- Devika Nair, MD
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