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Lectures on respiratory physiology Pulmonary Gas Exchange I
Perfect Lung PO 2 cascade in a hypothetical perfect lung
Effect of hypoventilation
All the expired CO2 comes from the alveolar gas
Alveolar Ventilation Equation using PCO 2
Alveolar Gas Equation
Using the Alveolar Gas Equation
Alveolar gas equation for hypoventilation
What inspired O 2 concentration is required to return the alveolar PO 2 to normal?
Causes of hypoventilation
PO 2 cascade showing a diffusion step
Time courses for PO 2 in the capillary
Thickened blood-gas barrier
PO 2 cascade showing addition of shunt
O 2 concentrations with a shunt
Deriving the shunt equation
The shunt equation
Shunt causes a low arterial PO 2 with 100% O 2
Copyright © 2006 by Elsevier, Inc. Determinants of Diffusion Rate of Diffusion = (P 1 -P 2 ) * Area * Solubility Distance * MW Pressure Gradient Area Distance.
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