FLUID DISTRIBUTION AND EDEMA Flashcards Preview

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Flashcards in FLUID DISTRIBUTION AND EDEMA Deck (69)
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1

intracellular fluids

- 2/3 is water

2

whole vascular volume

- 5L
- 3L is plasma
- 40% RBC

3

total body weight

- 60% (60L) men
- 50% women more adipose tissue 5% breast

4

TBW

- 60L
40% intracellular fluid
20% extracellular fluid 2/3 is interstitial (in bet.cells)

5

ICF vs ECF

- fluid goes from ICF(6) to ECF(12) due to greater concentration

6

osmotic pressure/ osmolar pressure

- lift draw of water to the area of higher concentration
- balancing out electrical forces

7

hydrostatic pressure

- arteriolar

8

electrical pressure

- K+ and Na+ cation ions repel each other

9

2x Na concentration

- index for EXTRACELLULAR OSMOLARITY

10

ECF osmolarity INCREASES

- cell SHRINK
- sodium concentration with in the cell is INCREASING
- HYPEROSMOLAR

11

ECF osmolarity DECREASES

- cell SWELL
- cells becomes dehydrated

12

STEADY STATE SITUATION

- intracellular=extracellular concentration of water

13

osmolar pressure

- is the SODIUM

14

WATER PUT ON A BLOOD

- cells swell and burst patient dies
- D5W is used to prevent this

15

ICF

2/3 TBW

16

ECF

1/3 interstitial

17

TBW men

60L

18

TBW women

50L

19

blood minus cell

- plasma

20

serum

- clotting factors removed(post clotted blood)

21

plasma

- has the clotting factors
- physiologic

22

volume

- widening convergence and expansion

23

concentration

- vertical increase(hyperosmolar) and decrease(hypo osmolar)

24

loss of isotonic fluid (hemorrhage loss of intracellular fluid as RBC volume not changing concentration), isotonic urine, diarrhea or vomiting

- losing only plasma
- extracellular fluid loss
- volume
- no movement of fluids in either direction because ICF and ECF has the same 300 mosm concentration
- DECREASE ECF VOLUME
- NO CHANGE IN BODY OSMOLARITY AND ICF VOLUME

25

loss of hypotonic fluid sweating, hypotonic urine, diabetes insipidus, dehydration, ALCOHOLISM (nephrogenic DI) inhibit ADH loss of free water

- salt retention increase osmolality ECF
- increasing concentration decreasing volume
- effect on ICF fluid move out of the cells to compensate hence ICF volume is decreasing
- DECREASE IN ECF AND ICF VOLUME
- INCREASE IN BODY OSMOLARITY

26

salt tablets

- increase osmolality
- dehydrate the cells
- ECF concentration will increase

27

tap water or distilled water has the lowest sodium content, IVF

- ECF osmolality decreases
- ICF concentration decrease

28

patient hypotensive, sepsis, GI bleeding, burns volume loss

- you want the volume in the vascular space
- normal saline IVF is used

29

major blood volume loss

- IVF used normal saline .9 or lactated ringer isotonic solution it will expand ECF

30

infusion of isotonic saline normal saline, 0.9%, ringers lactate

- no osmotic draw
- INCREASE ECF VOLUME
- NO CHANGE IN BODY OSMOLARITY AND ECF VOLUME