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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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Question
Answer
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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