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Residual Renal Function

Interdialytic Urine Volume
IDUV
ml
Urine Urea Concentration
UUC
mg/dL
Interdialytic Period
ID Period
min
Mean Blood Urea Nitrogen
Mean BUN
mg/dL
RRF:
ml/min

Calculation Formula

RRF = (IDUV UUC) / (ID Period Mean BUN)

Explanation

English Name: Residual Renal Function, RRF

Residual renal function refers to the remaining kidney function in patients with chronic renal failure at the end stage. Although these residual kidney functions are very limited (less than 10% of normal function), and even insufficient to sustain life, they still play a significant role in clearing toxins and excess water from the body, maintaining nutrition, and controlling blood pressure.

References

Research Paper 1. Daugirdas JT, Ing TS. (1994) Handbook of Dialysis. Second Edition pp 92-107. Research Paper 2. Shemin D, et al. Residual renal function and mortality risk in hemodialysis patients. Am J Kidney Dis 2001. 38(1):85-90. Research Paper 3. Wang AY, Lai KN. The importance of residual renal function in dialysis patients. Kidney Int 2006. 69(10):1726-32.
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