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Understanding Alveolar Gas Exchange Cascade in Perfect Lung Physiology

Explore lectures on respiratory physiology, focusing on the PO2 cascade in an ideal lung. Learn about the Alveolar Gas Equation, effects of hypoventilation, shunt equation, and more. Gain insights into causes and consequences of hypoventilation.

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Understanding Alveolar Gas Exchange Cascade in Perfect Lung Physiology

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  1. Pulmonary Gas Exchange I Lectures on respiratory physiology

  2. PO2 cascade in a hypothetical perfect lung Perfect Lung

  3. Effect of hypoventilation

  4. All the expired CO2 comes from the alveolar gas

  5. Alveolar Ventilation Equation using PCO2

  6. Alveolar Gas Equation

  7. Using the Alveolar Gas Equation

  8. Alveolar gas equation for hypoventilation

  9. What inspired O2 concentration is required to return the alveolar PO2 to normal?

  10. Causes of hypoventilation

  11. PO2 cascade showing a diffusion step

  12. Time courses for PO2 in the capillary

  13. Thickened blood-gas barrier

  14. PO2 cascade showing addition of shunt

  15. O2 concentrations with a shunt

  16. Deriving the shunt equation

  17. The shunt equation

  18. Shunt causes a low arterial PO2 with 100% O2

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