Pasternack, "Limited value of the fractional excretion of sodium test in the diagnosis of acute renal failure," Nephrology, Dialysis, Transplantation, vol.
Yoburn, "Nonoliguric acute renal failure associated with a low fractional excretion of sodium," Annals of Internal Medicine, vol.
These results could explain, at least in part, the recovery of the fractional excretion of sodium
, and consequently potassium, osmolytes, and water observed in BUO-7 group.
The calculators are: A-a Gradient, Anion Gap, BSA/BMI, Estimated creatinine clearance, Fractional Excretion of Sodium
, Heart Disease Risk, LDL Cholesterol Goal Level, Ingested Substance Blood Level, Serum Osmolality, Temperature Conversion (F-C).
Determining the fractional excretion of sodium (FENa) is valuable in differentiating between acute tubular injury and prerenal azotemia (the presence of increased amounts of nitrogenous substances in the blood, consistent with renal failure) (Corwin, Schreiber, & Fang, 1984).
Low fractional excretion of sodium: Occurrence with hemoglobinuric- and myoglobinuric-induced acute renal failure.
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.sub.2] difference calculations, to name a few.