ABG.doc

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Complex Respiratory Disorders Class Content Activity

Type of Acid-Base Balance

pH (high or low?)

Causes

Compensatory Mechanism

Metabolic acidosis

Metabolic alkalosis

Respiratory acidosis

Respiratory alkalosis

Tic Tac Toe Method of ABG interpretation

Values for ABGs

Normal Value

Acid End of Value Range

Base End of Value Range

What organ has the most effect on this value?

Value is respiratory or metabolic?

pH

PaCO2

HCO 3 -

Tic Tac Toe Method of ABG Interpretation

Solve these ABG problems using the Tic Tac Toe method. Show your work on a Tic Tac Toe grid. Interpret the values (respiratory or metabolic; acidosis or alkalosis; uncompensated, partially compensated, or fully compensated).

1.

pH

7.20

CO2

78

HCO 3 -

30

pH

7.26

CO2

56

HCO 3 -

24

3.

pH

7.20

CO2

25

HCO 3 -

9

4.

pH

7.32

CO2

25

HCO3

13

5.

pH

7.48

CO2

33

HCO 3 -

24

6.

.

pH

7.56

CO2

44

HCO 3 -

38

7.

pH

7.38

CO2

76

HCO 3 -

42

8.

pH

7.55

CO2

20

HCO 3 -

18

9.

pH

7.48

CO2

20

HCO 3 -

16