Question

List the normal airway, alveolar, arterial, and mixed venous O₂

and PCO₂ values. List the normal arterial and mixed venous values
for PCO₂ saturation,- [HCO₃ ], and pH.

Answer 1

The normal values for O₂ and PCO₂ in different parts of the respiratory system, as well as the normal values for PCO₂ saturation, HCO₃-, and pH in arterial and mixed venous blood.

Step-by-step explanation:

Normal airway, alveolar, arterial, and mixed venous values for O₂ and PCO₂ are as follows:

• Airway: O₂ = 150 mm Hg, PCO₂ = 0 mm Hg
• Alveolar: O₂ = 100 mm Hg, PCO₂ = 40 mm Hg
• Arterial: O₂ = 100 mm Hg, PCO₂ = 40 mm Hg
• Mixed Venous: O₂ = 40 mm Hg, PCO₂ = 46 mm Hg

The normal arterial and mixed venous values for PCO₂ saturation, HCO₃-, and pH are:

• Arterial: Saturation = 97-99%, HCO₃- = 22-26 mM, pH = 7.35-7.45
• Mixed Venous: Saturation = 70-75%, HCO₃- = 24-29 mM, pH = 7.31-7.41