Alveolar-arterial Gradient

Alveolar-arterial Gradient

The Alveolar–arterial gradient (A–a gradient), is a measure of the difference between the alveolar concentration (A) of oxygen and the arterial (a) concentration of oxygen. It is used in diagnosing the source of hypoxemia.

Read more about Alveolar-arterial Gradient:  Equation, Values and Meaning

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Alveolar-arterial Gradient - Values and Meaning
... The A–a gradient is useful in determining the source of hypoxemia ... A normal A–a gradient for a young adult non-smoker breathing air, is between 5–10 mmHg ... Normally, the A–a gradient increases with age ...