Arterial Blood Gas

Question 1

pH < 7.40

Answer 1

Acidosis

Question 2

pH > 7.40

Answer 2

Alkalosis

Question 3

PaCO2= 35-45 mmHg

Answer 3

Adequate ventilation

Question 4

PaCo2 < 30mmHg

Answer 4

alveolar HYPERventiliation

Question 5

PaCO2 > 50 mmHg

Answer 5

alveolar HYPOventilation, ventilatory failure

Question 6

PaCO2 > 45mmHg, pH < 7.40

Answer 6

Respiratory Acidosis

Question 7

PaCO2 > 45mmHg, pH > 7.40

Answer 7

Metabolic Alkalosis (retention of CO2 to compensate for this)

Question 8

PaCO2 < 35mmHg, pH > 7.40

Answer 8

Respiratory Alkalosis

Question 9

PaCO2 < 35mmHg, pH < 7.40

Answer 9

Metabolic Acidosis (elimination of CO2 to compensate for this)

Question 10

HCO3- = 22-26 mEq/L

Answer 10

no primary metabolic problem/no metabolic compensation for a respiratory problem

Question 11

HCO3- = <22, pH < 7.40

Answer 11

Metabolic Acidosis

Question 12

HCO3- = < 22, pH > 7.40

Answer 12

Respiratory Alkalosis (renal compensation)

Question 13

HCO3- = >26, pH > 7.40

Answer 13

Metabolic Alkalosis

Question 14

HCO3- = >26, pH <7.40

Answer 14

Respiratory Acidosis (renal compensation)

Question 15

PaO2= 80-100, SaO2 >95%

Answer 15

Normal

Question 16

PaO2 = 60-79, SaO2 90-95%

Answer 16

Mild hypoxemia

Question 17

PaO2= 40-59, SaO2 60-90%

Answer 17

Moderate hypoxemia

Question 18

PaO2 <40, SaO2 <60%

Answer 18

Severe Hypoxemia