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ESA 5 - Integrative > IV fluid prescribing > Flashcards

Flashcards in IV fluid prescribing Deck (9):
1

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

2

What separates plasma from interstitial fluid?

capillary wall

3

What separates interstitial fluid from the intracellular fluid?

cell membrane

4

Is the cell membrane permeable to water, urea, Na, K?

Yes - water and urea
No - Na and K

5

Is the capillary wall permeable to water, urea, na, K, plasma protein?

Yes - water, urea, na, K
No - plasma protein

6

If you want to increase the fluid volume of the ECF but not the ICF, what would you use?

Saline solution IV

7

if you want to increase the fluid volume of plasma only, what would you use?

Colloid IV

8

How is thirst monitored?

Monitored by osmoregulators in hypothalamus. Rise in plasma osmolarity = thirst

9

How does ADH and the RAAS system work to regulate body fluid?

Increase plasma osmolarity = ADH release, increase water reabsorption in the CD and late DCT
Low sodium and chloride concentration = RAAS system activated to increase reabsorption of ions and water