Chapter 4 - Alveolar Capillary Membrane Surface Area Flashcards
How much alveolar surface is available for gas exchange?
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How much surface area of the pulmonary capillaries is available for gas exchange?
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Can you maintain adequate gas exchange if you lose a large quantity of surface area due to disease processes?
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Can you think of any medical problems acute or chronic that would cause a loss of surface area?
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Would you expect hypoxemia to occur and CO2 retention to occur if surface area was decreased?
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what is the purpose of the alveolar type II cells?
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What is the function of the pores of Cohn?
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Explain how smoking, macrophage when combined together can result in the development of emphysema.
Figure 4-12.
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What is surfactant, what does it do, and why’s it so important in keeping us alive?
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How long do you think you would live without surfactant? What would happen to you if you did not have enough?
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An increase in capillary hydrostatic pressure can cause pulmonary edema. What is the mechanism of the edema, where does the swelling occur? How does it affect gas diffusion?
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Name the four layers of the alveolar capillary membrane, starting from the innermost layer.
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What is the importance of the LS ratio when discussing the survivability of the premature infant and how does it relate to surfactant and lung compliance and work of breathing?
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Make the connection between surfactant deficiency and the VQ mismatch known as shunting, described the cause-and-effect relationship and the mechanics of it all.
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