Medical Calculator#AKI#renal#nephrology
Fractional Excretion of Urea
Identify a pre-renal state in patients using diuretics
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About
A fractional excretion of urea (FEUrea) of < 35% is suggestive of pre-renal azotemia. Unlike when measuring of the fractional excretion of sodium, (FENa), it can be used even when patients are taking diuretics.
Fractional Exceretion of Urea = Uur X Pcreat / Ucreat X Pur · 100%
Where:
- Uur = Urine urea
- Pcreat = Plasma creatinine
- Ucreat = Urine creatinine
- Pur = Plasma urea
Published Literature & References:
- [1]Carvounis et al.: Significance of the fractional excretion of urea in the differential diagnosis of acute renal failure.Kidney International 2002, 62 (6): 2223-9
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Fractional Excretion of Urea
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0%Medical calculation formulas standardized according to evidence-based clinical protocols.
About
A fractional excretion of urea (FEUrea) of < 35% is suggestive of pre-renal azotemia. Unlike when measuring of the fractional excretion of sodium, (FENa), it can be used even when patients are taking diuretics.
Fractional Exceretion of Urea = Uur X Pcreat / Ucreat X Pur · 100%
Where:
- Uur = Urine urea
- Pcreat = Plasma creatinine
- Ucreat = Urine creatinine
- Pur = Plasma urea
Published Literature & References:
- [1]Carvounis et al.: Significance of the fractional excretion of urea in the differential diagnosis of acute renal failure.Kidney International 2002, 62 (6): 2223-9