Cardiopulmonary: Arterial Blood Gas Values

Question 1

pH

Answer 1

7.4 (7.35-7.45)

Question 2

PaCO2

Answer 2

40 mmHg at seal level breathing ambient air

35-45 mmHg

Question 3

PaO2

Answer 3

97 mmHg at seal level breathing ambient air

80-100 mmHg

Question 4

HCO3-

Answer 4

24 mEq/L

22-26 mEq/L

Question 5

SaO2

Answer 5

95-98%

Question 6

Acidemia

Answer 6

Elevated acidity of blood

pH

Question 7

Alkalemia

Answer 7

Decreased acidity of blood

pH > 7.45

Question 8

Eucapnia

Answer 8

Normal level of CO2 in arterial blood

PaCO2 35-45 mmHg

Question 9

Hypercapnia

Answer 9

Elevated level of CO2 in arterial blood

PaCO2 > 45 mmHg

Question 10

Hypocapnia

Answer 10

Low level of CO2 in arterial blood

PaCO2

Question 11

Hypoxemia

Answer 11

Low level of O2 in arterial blood

PaO2

Question 12

Mild hypoxemia

Answer 12

PaO2 60-79 mmHg

Question 13

Moderate hypoxemia

Answer 13

PaO2 40-59 mmHg

Question 14

Severe hypoxemia

Answer 14

PaO2

Question 15

Hypoxia

Answer 15

Low level of O2 in the tissue despite adequate perfusion of the tissue

Question 16

PaCO2

Answer 16

Alveolar hyperventilation

Question 17

PaCO2 > 50

Answer 17

Alveolar hypoventilation, ventilatory failure

Question 18

PaCO2 > 45 mmHg and pH

Answer 18

Respiratory acidosis

Question 19

PaCO2 > 45 mmHg and pH > 7.40

Answer 19

retention of Co2 to compensate for metabolic alkalosis

Question 20

PaCO2 7.40

Answer 20

Respiratory alkalosis

Question 21

PaCO2

Answer 21

Elimination of CO2 to compensate for metabolic acidosis

Question 22

HCO3-

Answer 22

Metabolic acidosis

Question 23

HCO3- 7.40

Answer 23

renal compensation for respiratory alkalosis

Question 24

HCO3- >26 mEq/L and pH > 7.40

Answer 24

Metabolic alkalosis

Question 25

HCO3- >26 mEq/L and pH

Answer 25

renal compensation for respiratory acidosis