Calculations
20-13
20.6.2 Entered Parameters
Abbreviation Unit Full spelling
URK mmol/L urine pstassium
URNa mmol/L urinary sodium
Urine ml/24h urine
Posm mOsm/ kgH2O plasm osmolality
Uosm mOsm/ kgH2O urine osmolality
SerNa mmol/L serum sodium
Cr
μmol/L
creatinine
UCr
μmol/L
urine creatinine
BUN mmol/L blood urea nitrogen
Height cm height
Weight kg weight
20.6.3 Calculated Parameters
Abbreviation Unit Full spelling
URNaEx mmol/24h urine sodium excretion
URKEx mmol/24h urine potassium excretion
Na/K % sodium potassium ratio
CNa ml/24h clearance of sodium
Clcr ml/min creatinine clearance rate
FENa % fractional excretion of sodium
Cosm ml/min osmolar clearance
CH2O ml/h free water clearance
U/P osm None urine to plasma osmolality ratio
BUN/Cr None* blood urea nitrogen creatinine ratio
U/Cr None urine-serum creatinine ratio
*: BUN/Cr is a ratio under the unit of mol.
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