USMLE Forums - View Single Post - Pulmonary Shunting, Please Explain?
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Old 12-01-2010
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schiwei schiwei is offline
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Default Re:V/Q

The problem I have with V/Q approaching infinity is this : it implies that there is no perfusion. So given no perfusion, the amount of ventilation that goes on would be meaningless, blood would not be filled with oxygen, no matter what..so how does the pO2 increase then? how would a vacuum chamber necessarily still have air in it, in absolute measurable terms as evidenced by the pO2 in the blood?

Last edited by schiwei; 12-01-2010 at 08:56 AM. Reason: needed to add extra comment to elucidate my thinking more clearly
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