Fluid Assessment

Question 1

What is the total body water?

Answer 1

42 L, 60% of body weight

Question 2

How much fluid is in the intracellular component?

Answer 2

2/3 of TBW

28 L

Question 3

How much fluid is in the extracellular compartment?

Answer 3

1/3 of TBW

14 L

Question 4

How much fluid is in the interstitial compartment?

Answer 4

3/4 of ECF

10.5 L

Question 5

How much fluid is in the intravascular compartment?

Answer 5

1/4 ECF

3.5 L

Question 6

What are the predominant extracellular cations/anions?

Answer 6

Na, Cl, bicarb

Question 7

What is the predominant intracellular cation?

Answer 7

K+

Question 8

What are some symptoms of dehydration?

Answer 8

Dry oral mucosa, glossy eyes, hypotension, reflex tachycardia, loss of skin elasticity, less frequent urination

Question 9

What are some symptoms of fluid overload?

Answer 9

Edema (especially of the legs), high blood pressure, shortness of breath

Question 10

What are some possible lab changes with dehydration?

Answer 10

BUN increases (> 20/1 BUN:SCr)
Na loss
K loss

Question 11

What are some possible lab changes with reduced kidney function?

Answer 11

K increases
SCr increases
BUN increases

Question 12

What is the the daily maintenance fluid requirements for adults?

Answer 12

30 - 35 cc/kg/day