Water and body weight

Question 1

What is the average amount of water in the body

Answer 1

42L of water for average 70kg person (60% of body weight)

Question 2

What is a good way to see whats wrong at a cellular level

Answer 2

examine that person electrolytes in their blood

Question 3

What happens to water % in people with obesity

Answer 3

Obesity can cause less water % cause fat is hydrophobic

Question 4

Why are elderly people at a higher risk of dehydration

Answer 4

their thirst reg in the hypothalamus decreases so they dont know their thirsty
and they have less water weight (% of body weight from water)

Question 5

What is the body weight percentage of pediatrics

Answer 5

75% to 80%

Question 6

What percentage of water might an obese person have

Answer 6

30-40%

Question 7

Where is the majority of water held

Answer 7

in cells

Question 8

What is the 60:40:20 on her slides refering to

Answer 8

60% of our body weight is water
40% of of that water is intracellular
20% is extracellular

Question 9

What % of body weight in elderly is fluid

Answer 9

50

Question 10

Why are babies weight % a problem

Answer 10

because most of their body weight is water, they cant lose much of it before it becomes problematic

Question 11

What are some ways babies lose a lot of fluid fast

Answer 11

vomiting

diarrhea

Question 12

What does losing a lot of water fast put babies at a higher risk of (especially since they have immature systems)

Answer 12

sickness

Question 13

Why does it make sense that elderly people would have less water weight than a middle aged adult

Answer 13

as we age muscle mass decreases usually because of less exercise and smaller appetite so muscles atrophy
and we gain fat (which repels water)
drinks less water
decreased renal function

Question 14

Why might elderly drink and eat less

Answer 14

pain from something so they dont want to move

Question 15

What is something relating to water balance that should be monitiored in patients

Answer 15

does their fluid intake match their fluid outtake

Question 16

Where do we get the most our fluid intake

Answer 16

oral (food and drinks)

metabolism (not nearly as much)

Question 17

Where does most of our fluid outtake occur

Answer 17

urination
skin
little bit from feces, lungs

Question 18

If we give a patient a hypertonic solution into the vascular tissue, where is the fluid going to travel

Answer 18

its going to pull the intracellular fluid into the interstitial fluid then into the vascular tissue

Question 19

If we give a patient a hypotonic solution into the vascular tissue, where is the fluid going to travel

Answer 19

its going to cause the fluid in the vascular space to move out into the interstitial space where it will probably then move into the cells

Question 20

What electrolyte dominates the interstitial fluid

Answer 20

sodium

Question 21

What electrolyte dominates the intracellular space

Answer 21

potassium

Question 22

When fluid moves out of the vascular space and into the interstitial space its called wwhat

Answer 22

third spacing

Question 23

If you clog up the liver areas, what might happen

Answer 23

third spacing