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Hugh's MD2 Foundation > Fluid Balance > Flashcards

Flashcards in Fluid Balance Deck (16):
1

What is the likely cause of hyponatraemia with hypovolaemia?

Na deficit - Over diuresis

2

How much water is there in the body and what proportion of weight does it make?

42L

~33%

3

What percentage of total potassium is EC?

2%

4

What are the major ions of the extracellular compartment?

Na and Cl

5

What is the equation for O2 delivery?

O2 Delivery = Hb x SaO2 x HR x 1.34

6

In term of ECV and ICV, compare what happens when water or saline is added or lost from the body?

Water: water will be lost or added to both the ECV and ICV

 

Saline: saline will be added or lost to only the ECV

7

What pharmaceuticals increase K flow into cells?

Insulin

Beta-agonists

aldosterone

8

When N/saline is given where does it go predominantly? EC or IC?

Extracellular

9

What are the major ions of the intracellular compartment?

K and organic anions

10

Where does saline typically travel to?

ECF

(only 3/14 will go to IV)

11

How much Na and Cl is contained in 1L of normal saline?

154mol

12

What are colloids?

Fluid with large molecules in it

13

Where does 5% dextrose fluid typically distribute to?

ICS and ECS as water is a total body fluid

14

What proportion of total body water is extracellular? How it is divided?

1/3

Intravascular and extravascular

15

What is the normal range for K?

3.5-5mmol/L

16

High plasma sodium indicates what?

Decreased water intake

Increase water loss - sweating, urination