Flashcards in IV fluid prescribing Deck (9):
Give the rough percentages of where water is found in the body
40% of total body weight is in intracellular fluid
20% of total body weight is in extracellular fluid - 20% of ECF is plasma and 80% of ECF is interstitial fluid
What separates plasma from interstitial fluid?
What separates interstitial fluid from the intracellular fluid?
Is the cell membrane permeable to water, urea, Na, K?
Yes - water and urea
No - Na and K
Is the capillary wall permeable to water, urea, na, K, plasma protein?
Yes - water, urea, na, K
No - plasma protein
If you want to increase the fluid volume of the ECF but not the ICF, what would you use?
Saline solution IV
if you want to increase the fluid volume of plasma only, what would you use?
How is thirst monitored?
Monitored by osmoregulators in hypothalamus. Rise in plasma osmolarity = thirst