(3) ALVEOLAR GAS EXCHANGE objectives

Question 1

Write Fick’s diffusion equation and describe the effect of an increase or decrease in value of each parameter affects the rate of diffusion

Answer 1

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Question 2

Explain how equilibration of carbon monoxide across pulmonary membrane is diffusion limited,

Answer 2

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Question 3

how equilibration of NO2 is perfusion limited

Answer 3

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Question 4

why oxygen equilibration is normally perfusion limited but can be diffusion limited in disease

Answer 4

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Question 5

Describe how diffusion limitations can affect oxygen equilibration in exercise and in severe disease conditions at rest

Answer 5

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Question 6

Describe, in general terms, the methods used to measure diffusing capacity across the pulmonary membrane

Answer 6

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Question 7

Describe, in general terms, carbon dioxide transfer across the pulmonary membrane

Answer 7

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Question 8

how exercise may impact equilibration

Answer 8

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Question 9

Explain why diffusion blocks can result in hypoxemia but hypercapnia cannot be clinically due to diffusion blocks.

Answer 9

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