2022+FLUID+BALANCE+vula.pdf

LECTURE NOTES:

• [ ] the different fluid compartments
• [ ] factors that influence movement of water across the compartments
• [ ] why is it critical to ensure that ECF is maintained at the correct volume and osmolarity and what are the consequences if they are changed
• [ ] effect of volume and osmolarity changes in the fluid compartment

Normal composition of body fluids:

• depends on adipose vs muscle mass
• total water declines with age

Adult Male:

• 60% of the body is made up of water
• Of that 60%, 33% is ICF and 21.5% is interstitial (ECF) fluid.
• Plasma accounts for 4.5% of this
• Other body fluids make up the last 1%

Adult female:

• 50% of the body is made up of water
• Of that, 27% is ICF and 18% is interstitial fluid (ECF).
• Plasma accounts for 4.5%
• Other body fluids make up the last 1%

FLUID AND HOMEOSTATIC BALANCE