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Flashcards in fluid and electrolytes Deck (107)
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1

How much of body mass is water?

60%

2

How many mls are required per day for life?

1500 ml/day

3

How much water do we typically consume a day?

~2000 ml/day

4

what is a healthy daily water consumption?

4,000 ml/day

5

What does out water balance affect?

cardiovascular function (blood pressure)
temperature regulation
renal performance

6

What are some factors that affect water balance?

Burns
sweating
Dry air
diarrhea
drugs
disease

7

What makes up total body water (TBW)?

intracellular fluid
extracellular fluid

8

what is extracellular fluid composed of?

interstitial fluid
intravascular fluid
lymoh, synovial, intestinal, biliary, hepatic, pancreatic, CSF, sweat, urine, pleural, peritoneal, pericardial, and intraocular fluids

9

Where does ADH (vasopressin) come from?

posterior pituitary

10

where does ADH act?

collecting Duct of Nephron

11

what does ADH do?

causes insertion of aquaporins into collecting duct which leads to water reabsorption by kidneys.

12

ADH

Antidiuretic hormone

13

What does ADH do?

regulates urine flow by increasing the permeability of the renal collecting duct to water.
more water is removed from the urine when ADH is present.

14

How do baroreceptors in the aortic arch and carotid sinus regulate ADH?

It sensing the decrease in blood pressure

15

How does the hypothalamic osmoreceptor regulate ADH?

it detects increased plasma osmolarity which then reduces blood volume.

16

right arterial stretch as well as a alcohol and caffeine _____ ADH release

inhibit

17

as blood pressure ______, urine flow _____.

as blood pressure increase, urine flow increases.

18

where is aldosterone released from?

adrenal cortex

19

what does aldosterone regulate?

sodium and potassium balance.

20

how does aldosterone increase sodium?

Sodium reabsorption from the urine and sweat
uptake from the gut

21

how does aldosterone decrease potassium?

by increasing secretion into the urine

22

ANP

Atrial natriuretic peptide or factor
the signal to increase or decrease blood volume

23

When is ANP released from the right atrium?

when the atrium is stretched as a cause of high venous blood volume and congestive heart failure.

24

what are pressures that determine the movement of water between vessels and tissues (capillary shift)?

hydrostatic pressure
oncotic pressure

25

hydostatic pressure

the physical pressure that the fluid is excerting on walls
a function os heart beat, water volume, gravity and vessel size

26

oncotic pressure

its kinda of a pulling pressure. Is there is a compartment with more "stuff" it will have a higher oncotic pressure. The more proteins the more it will pull water in.
it's a function of plasma proteins

27

Capillary hydrostatic pressure

out of the capillary

28

plasma oncotic pressure

into the capillary

29

interstitial hydrostatic pressure

out of the interstitial fluid (into the capillary)

30

interstitial oncotic pressure

into the interstitial fluid (from the capillary)