Topic summary

Fluid loss

Fluid loss

Extracted from the Wikipedia article Volume contraction.

Estimation

  • VICF a = Intracellular fluid volume after fluid loss
  • nICF a = Amount of substance in ICF after fluid loss
  • Osma = Body osmolarity after loss
  • VICF b = Intracellular fluid volume before fluid loss (approximately 40% of body weight, or subtracting ECF from TBW)
  • Osmb = Body osmolarity before loss (almost equal to plasma osmolality of 275-299 milli-osmoles per kilogram)
  • nlost K+ = Amount of substance of lost potassium