PAO2—partial pressure of alveolar O2
FiO2—fraction of inspired O2
Patm—atmospheric pressure
—partial pressure of water vapor
PaCO2—partial pressure CO2 in arterial blood
R—respiratory exchange ratio, usually 0.8
Alveolar–arterial gradient [3]
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- (b)
A–a gradient = PAO2 − PaO2
PaO2—partial pressure of arterial O2Related posts:
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- (b)
