WVSOM -- Ventilation - Perfusion Relationships
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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How does ventilation vary within the lung? | show 🗑
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How des blood flow vary within the lung? | show 🗑
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show | NO, blood flow has a greater difference
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show | ventilation, diffusion, Shunt and Ventilation/Perfusion inequality
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What are the 4 causes of hypoxemia? | show 🗑
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show | the difference between the Alveolar PO2 and the arterial PaO2
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show | arterial blood gas
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show | Ideal alveolar gas equation
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What is the ideal alveolar gas equation? | show 🗑
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How is PaCO2 determined? | show 🗑
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show | inspired O2. Around 149 mmHg at sea level
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show | 3-4 mmHg
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show | alvolar PO2
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What does Hypoventilation do to the A-a gradient? | show 🗑
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show | give oxygen
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Why is A-a gradient unaffected in hypoventilation? | show 🗑
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What what will diffusion impairment do to the A-a gradient? | show 🗑
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show | oxygen
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What does an increased ventilation-perfusion inequality do to the A-a gradient? | show 🗑
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Does ventilation-perfusion inequality reduce arterial PO2 under normal conditions? | show 🗑
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show | 1
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What happens in shunting? | show 🗑
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show | ventilation is greater than perfusion. V/Q is > 1
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What is the V/Q ration like in the upright lung? | show 🗑
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What is normal shunt? | show 🗑
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Can Oxygen treatment fix shunting problems? | show 🗑
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What determines the PAO2 ? | show 🗑
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What is alveolar gas composition dependent on? | show 🗑
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show | blood composition
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Where does most blood go to in the lung? | show 🗑
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show | 150
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show | 40
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show | CO2
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show | CO2 dissociation curve is steeper
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show | hypoventilation
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If there is hypoventilation with an increased A-a gradient what is the diagonosis? | show 🗑
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If there is not an increased A-a gradient and hypoventilation what is the diagnosis? | show 🗑
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If there is not an increased PaCO2 but an increased A-a gradient what can be the diagnosis? | show 🗑
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If there is not an increased PaCO2 but an increased A-a gradient and it is corrected with pure O2, what is the diagnosis? | show 🗑
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show | decreased inspired PO2
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What is the diagnosis if a hypoxic patient does not have an increased PaCO2, has an increased A-a gradient and O2 does not correct the problem? | show 🗑
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Created by:
tjamrose
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