A a Gradient

(redirected from Alveolar-Arterial Gradient)

A a Gradient

A measure of the difference between alveolar and arterial oxygen, which is equal to PAO2 - PaO2, and is a value of use in determining whether hypoxia is intrapulmonary or extrapulmonary.
References in periodicals archive ?
A widened alveolar-arterial gradient is present in most patients with pulmonary embolus.
Mean percent predicted forced vital capacity (FVC) decreased by 5% from baseline, mean percent predicted DLco decreased by 5%, and mean alveolar-arterial gradient increased by 2 mm Hg.
Mean alveolar gases and alveolar-arterial gradients in pulmonary patients.
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