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6 Cards in this Set
- Front
- Back
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What 2 forces must the work generated by the respiratory muscles of the lung overcome? |
- Elastic recoil - Flow resistance |
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At rest, how much of total oxygen do the respiratory muscles consume? |
3% - 5% |
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In the pressure-volume curve, how is work performed by lungs determined? |
Area under the curve |
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Does expiration require contraction of respiratory muscles during passive breathing? |
No |
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What effect does restrictive lung disease have on the Pressure-volume curve?
What does that mean? |
Work required to overcome the elastic recoil is much larger, meaning that the patient must generate a lot more work to expand the lungs. |
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What effect does obstructive lung disease have on the Pressure-volume curve?
What does that mean? |
Work required to overcome airway resistance is larger, but the work required to overcome elastic recoil is normal if uncomplicated. If complicated, the work to overcome elastic recoil is much larger.
Respiratory muscles must generate a lot more work to exhale air. |
