Ventilation

Ventilation

Fick’s law describes the movement of gases across the alveolar membrane.

Fick says: A thinner memrane facilitates diffusion.

Fick says: a larger surface area allows for more gas diffusion.

Fick also says: The more of a gas there is on one side of a membrane; the more likely it is to diffuse to the other side!

C

Effective ventilation is critically dependant on sufficient perfusion to remove carbon dioxide.

 

+

“Shunts” and “deadspace” are examples of mismatch between perfusion and ventilation.

 

Pin It on Pinterest