Body Fluids

Question 1

What is third spacing?

Answer 1

Too much fluid moving from BV’s (intravascular) into nonfunctional areas such as fluid between cells

Question 2

Normal range for Na

Answer 2

135 - 147 mEq/L

Question 3

Normal range for K

Answer 3

3.5 - 5 mEq/L

Question 4

Normal range for Cl

Answer 4

95 - 105 mEq/L

Question 5

Normal range for Osmolarity

Answer 5

285-295

Question 6

Normal range for creatinine

Answer 6

.6 to 1.2 mg/dL

Question 7

Normal range for BUN

Answer 7

7-18 mg/dL

Question 8

What indicator is used for ECF?

Answer 8

Inulin

Question 9

What indicator is used for Plasma?

Answer 9

Radiolabeled albumin

Question 10

What is the Gibbs Donnan effect?

Answer 10

Presence of a negatively charged protein on one side of a membrane generates osmotic and electrochemical gradients

Question 11

What counteracts the Gibbs Donnan effect?

Answer 11

Na/K ATPase, which prevents too much water from coming in and bursting the cell

Question 12

What is crystalloid replacement therapy?

Answer 12

Contain organic / inorganic salts (glucose and NaCl)

Question 13

Do crystalloids cross the plasma membrane?

Answer 13

No, they remain in the ECF

Question 14

What are colloids?

Answer 14

Large molecules that remain intravascularly and recruit fluids from extravascular spaces