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Flashcards in Fluid Therapy Deck (60)
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1

What are the roles of water in the body?

1. Solvent for reactions
2. Transportation of substances
3. Heat regulation
4. Essential for organ function

2

What percentage of body weight is made up of water in adults?

60%

3

What percentage of body weight is made up of water in neonates?

~80%

4

Is % water higher or lower for obese animals?

Lower

5

What percentage of water is in ICF?

40%

6

What percentage of water is in ECF?

20%

7

What percentage of water is in IVF?

5%

8

What percentage of water is in ISF?

15%

9

What is the blood volume per kg for dogs, cats, equine, bovine, ovine, and porcine?

Dogs 90mL/kg
Cats 65mL/kg
Equine 70mL/kg
Bovine 60mL/kg
Ovine 60mL/kg
Porcine 50mL/kg

10

T/F: Cell membranes are permeable for water.

True- impermeable to ions

11

T/F: Vascular walls are permeable for water and ions.

True- impermeable for large molecules

12

What ion is in the highest concentration in ICF?

Potassium

13

What ion is in the highest concentration in ECF?

Sodium

14

What molecule is the highest concentration in IVF?

Albumin

15

The movement of water across semipermeable membranes is called?

Osmosis

16

What is osmolality?

Number of molecules per kg of water

17

What is the pressure required to prevent water movement called?

Osmotic pressure

18

What is the normal osmolality of ECF/ICF?

~300 mOsm/kg

19

What effect will an isotonic solution have on RBCs?

None

20

What effect will an hypotonic solution have on RBCs?

Increased volume (swelling and hemolysis)

21

What effect will an hypertonic solution have on RBCs?

Decreased volume (shrinking and crenation)

22

What is the name of the osmostic pressure exerted by proteins?

Oncotic or colloid osmotic presure

23

T/F: Oncotic pressure pushes water out of the vascular space.

False- oncotic pressure pulls water into the vascular space

24

What molecule contributes the most to oncotic pressure?

Albumin

25

What is normal physiological plasma oncotic pressure?

~23 mmHg

26

When is edema formed in hypoalbuminemia?

When albumin is

27

Is the degree of hypoalbuminemia a good prognostic factor in severely ill patients?

Yes

28

What direction does hydrostatic pressure move fluid?

Out of the vascular space

29

What direction does oncotic pressure move fluid?

Into the vascular space

30

What are crystalloid solutions?

Crystalline solids dissolved in water

eg- NaCL, glucose, etc