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The Fractional Excretion of Sodium (FENa) determines if renal failure is due to pre-renal, intrinsic, or post-renal pathology.
The fractional excretion of sodium (FE Na) is the percentage of the sodium filtered by the kidney which is excreted in the urine. It is measured in terms of plasma and urine sodium, rather than by the interpretation of urinary sodium concentration alone, as urinary sodium concentrations can vary with water reabsorption.
Nov 15, 2022 · The fractional excretion of sodium (FENa) measures the percent of filtered sodium that is excreted in the urine. This calculation is widely used to help differentiate prerenal disease (decreased kidney perfusion) from acute tubular necrosis (ATN) as the cause of acute kidney injury (AKI, formerly called acute renal failure).
FENa Calculator. Calculate the fractional excretion of sodium given the serum and urine sodium, and the serum and urine creatinine. To accurately interpret FENa, patients should not have recently received diuretics.
Simple to obtain yet complex to interpret, the fractional excretion of sodium (FENa) is frequently quoted when a nephrology consult is placed.
Fractional excretion of sodium is often inac - curately elevated in patients receiving diuretics because of diuretic-induced natriuresis; fractional excretion of urea
Feb 3, 2022 · The FENa calculation estimates the percentage of sodium filtered by the kidneys that ends up being excreted into the urine. (The acronym FENa derives from “fractional excretion” and “Na." Na is the chemical symbol for sodium.)
The fractional excretion of sodium (FENa) measures the percent of filtered sodium that is excreted in the urine. The FENa is the most accurate screening test to help differentiate between prerenal disease and acute tubular necrosis (ATN), the two most common causes of acute kidney injury.
Simple to obtain yet complex to interpret, the fractional excretion of sodium (FENa) is frequently quoted when a nephrology consult is placed.
MEDICAL TOPICS RESOURCES DRUG INFO. Professional /. Clinical calculators /. Fractional Excretion of Sodium. In these topics. Oliguria. Acute Kidney Injury (AKI) Acute Tubular Necrosis (ATN) Evaluation of the Renal Patient.
