Isotonic Fluid Volume Deficit (MANIFESTATIONS)

Question 1

what are manifestations of isotonic fluid volume deficit?

Answer 1

thirst, decrease in body wt, decreased urine output, increase SG, osmolarity, sunken eyes, loss of skin turgor, infants (tearing), changes in BP or pulse, HCT, BUN

Question 2

how much does a litre of water weigh?

Answer 2

1 kg

Question 3

when baroreceptors sense a decrease in vascular volume, where do they send a message to?

Answer 3

pituitary to initiate a compensatory secretion of ADH

Question 4

ADH causes increased reabsorption of water an sodium which results in a decrease of what?

Answer 4

urine output

Question 5

as urine output decreases, what happens?

Answer 5

• urine is more concentrated
• the specific gravity an osmolality rise

Question 6

when vascular volume decreases, where does fluid move?

Answer 6

moves from the interstitial space in an attempt to improve vascular volume

Question 7

why is sunken eyes and decreased skin turgor not a reliable indicator of dehydration in elderly?

Answer 7

due to the loss of skin elasticity that occurs with aging

Question 8

what is an early sign of fluid deficit?

Answer 8

postural hypotension, a drop in BP on standing

Question 9

when BP drops, what happens to the pulse?

Answer 9

HR increases and pulse becomes weak an thready

Question 10

what happens in severe volume depletion?

Answer 10

the body experiences hypovolemic shock with vascular collapse

Question 11

as sodium and water are decreases, what happens to BUN an red blood cells?

Answer 11

they become more concentrated