Cardiopulmonary: Arterial Blood Gas Values Flashcards
pH
7.4 (7.35-7.45)
PaCO2
40 mmHg at seal level breathing ambient air
35-45 mmHg
PaO2
97 mmHg at seal level breathing ambient air
80-100 mmHg
HCO3-
24 mEq/L
22-26 mEq/L
SaO2
95-98%
Acidemia
Elevated acidity of blood
pH
Alkalemia
Decreased acidity of blood
pH > 7.45
Eucapnia
Normal level of CO2 in arterial blood
PaCO2 35-45 mmHg
Hypercapnia
Elevated level of CO2 in arterial blood
PaCO2 > 45 mmHg
Hypocapnia
Low level of CO2 in arterial blood
PaCO2
Hypoxemia
Low level of O2 in arterial blood
PaO2
Mild hypoxemia
PaO2 60-79 mmHg
Moderate hypoxemia
PaO2 40-59 mmHg
Severe hypoxemia
PaO2
Hypoxia
Low level of O2 in the tissue despite adequate perfusion of the tissue
PaCO2
Alveolar hyperventilation
PaCO2 > 50
Alveolar hypoventilation, ventilatory failure
PaCO2 > 45 mmHg and pH
Respiratory acidosis
PaCO2 > 45 mmHg and pH > 7.40
retention of Co2 to compensate for metabolic alkalosis
PaCO2 7.40
Respiratory alkalosis
PaCO2
Elimination of CO2 to compensate for metabolic acidosis
HCO3-
Metabolic acidosis
HCO3- 7.40
renal compensation for respiratory alkalosis
HCO3- >26 mEq/L and pH > 7.40
Metabolic alkalosis
HCO3- >26 mEq/L and pH
renal compensation for respiratory acidosis
