ABG

Acidotic

100

• pH 7.23
• paCo2 37
• HCO3 18

• metabolic acidosis, uncompensated

200

• pH 7.3
• PaCO2 68 mm Hg
• HCO3 28 mmol/L
• PaO2 60 mm Hg.

Respiratory Acidosis, Partially Compensated

300

pH 7.0

PaO2 90 mm Hg

PaCO2 23 mm Hg

HCO3 12 mmol/L

Metabolic Acidosis, Partially Compensated

400

pH 7.10

PaCO2 70 mm Hg

HCO3 24 mEq/L.

 Respiratory Acidosis, Uncompensated

500

• pH = 7.31
• PaCO₂ = 49 mmHg
• HCO₃ = 30 mEq/L.

•  PARTIALLY COMPENSATED RESPIRATORY ACIDOSIS.

Alkalotic

100

pH 7.5

PaO2 85 mm Hg

PaCO2 40 mm Hg

HCO3 34 mmol/L

Metabolic Alkalosis, Uncompensated

200

• pH= 7.48
• PaCO2= 28
• HCO3= 22
• PaO2= 85

• pH is high,
• PaCO2 is low
• respiratory alkalosis.

300

pH 7.6

PaO2 120 mm Hg

PaCO2 31 mm Hg

HCO3 25 mmol/L.

Respiratory Alkalosis, Uncompensated

400

pH 7.61

PaCO2 22 mmHg

HCO3 25 mEq/L

Respiratory Alkalosis, Uncompensated

500

• pH 7.57
• PaCO2 37 mmHg 
• HCO3 30 mEq/L

•  Metabolic Alkalosis, Uncompensated

Respiratory

100

 pH 7.56

paCo2 20

HCO3 20

respiratory alkalosis, partially compensated

200

pH 7.50

paCo2 32

HCO3 24

respiratory alkalosis, uncompensated

300

 pH 7.25

paCo2 60

HCO3 27

respiratory acidosis partially compensated

400

pH 7.20

paCo2 49

HCO3 25

 respiratory acidosis, uncompensated

500

pH 7.22

paCo2 49

HCO3 24

respiratory acidosis, uncompensated

Metabolic

100

pH 7.46

paCo2 36

HCO3 32

Metabolic Alkalosis

200

pH = 7.49

PaCO₂ = 33 mmHg

HCO₃ = 24 mEq/L.

RESPIRATORY ALKALOSIS

300

 pH 7.31

paCo2 34

HCO3 21

metabolic acidosis, partially compensated

400

 pH 7.52

paCo2 48

HCO3 28

metabolic alkalosis, partially compensated

500

 pH 7.55

paCo2 47

HCO3 30

metabolic alkalosis, partially compensated

Compensated

100

• pH= 7.33
• PaCO2= 25
• HCO3=12
• PaO2= 89

• The pH is acidotic,
• PaCO2 is 25 (low) which should create alkalosis.
• This is a respiratory compensation for the metabolic acidosis.
• The underlying problem is, of course, a metabolic acidosis.

200

• pH= 7.44
• PaCO2= 28
• HCO3= 24
• PaO2= 54

• PaCO2 is low.
• pH is on the high side of normal, therefore compensated respiratory alkalosis.

300

pH 7.39

PaCO2 27 mmHg

HCO3 19 mEq/L

Metabolic Acidosis, Fully Compensated

400

pH 7.35

PaCO2 72 mmHg

HCO3 38 mEq/L.

Respiratory Acidosis, Fully Compensated

500

pH = 7.35

PaCO₂ = 48 mmHg

HCO₃ = 29 mEq/L

FULLY COMPENSATED RESPIRATORY ACIDOSIS.