1. Lectures on respiratory physiology Pulmonary Gas Exchange I

2. Perfect Lung PO 2 cascade in a hypothetical perfect lung

3. Effect of hypoventilation

4. All the expired CO2 comes from the alveolar gas

5. Alveolar Ventilation Equation using PCO 2

6. Alveolar Gas Equation

7. Using the Alveolar Gas Equation

8. Alveolar gas equation for hypoventilation

9. What inspired O 2 concentration is required to return the alveolar PO 2 to normal?

10. Causes of hypoventilation

11. PO 2 cascade showing a diffusion step

12. Time courses for PO 2 in the capillary

13. Thickened blood-gas barrier

14. PO 2 cascade showing addition of shunt

15. O 2 concentrations with a shunt

16. Deriving the shunt equation

17. The shunt equation

18. Shunt causes a low arterial PO 2 with 100% O 2