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10 Cards in this Set
- Front
- Back
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What causes decreased PvO2?
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Decreased CaO2 (dec. Hb, SaO2), CO, or increased uptake (VO2)
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What is a deadspace unit?
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Ventilated, no perfusion
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What is a shunt unit?
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Perfused, no ventilation
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What is a silent unit?
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No perfusion or ventilation
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List 5 causes of hypoxemia?
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Hypoventilation, Diffusion impairment, shunt, V/Q mismatch, high altitude
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What are the feature of hypoventilation?
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Increased PaO2, decreased gas flow. May be secondary hypoxemia
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How is hypoxia tx'd in a diffusion impairment?
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Increased FiO2
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What are possible intrapulmonary causes of shunt?
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A-V fistulas, pneumonia, ARDS
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What are possible extrapulmonary causes of shunt?
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R->L shunt
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Does increasing FiO2 fix shunt?
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No
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