Research Notes on A-a Oxygen Gradient
The A-a oxygen gradient is a measure of how effectively oxygen is being transferred from the lungs to the blood.1 In a healthy lung, when inhaling would match exhaling exactly, there would be no difference between these two and the gradient would be zero.2 The gradient is most effective when the patient has been breathing “ambient air” for at least five minutes.1
Fast Facts:
Top Resources on A-a Oxygen Gradient
- ValueMD: A-a Gradient
- Mad Scientist Software Inc: Blood Gases
- Journal Watch: A-a Gradient Is Of Little Use In Evaluating For PE
- Chest Journal: Alveolar-Arterial Oxygen Gradient In The Assessment Of Acute Pulmonary Embolism
- Med Calc 3000: A-a Gradient
- LabPlus: Alveolar - Arterial Oxygen Gradient
- Medscape: The A-a Gradient
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Research Notes References
- ↑ 1.0 1.1 LabPlus: Alveolar - Arterial Oxygen Gradient
- ↑ 2.0 2.1 2.2 2.3 Medscape: The A-a Gradient
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- Contributor: Janet
- Reviewer: Nicole Kinsey
- Supervised by: The OrganizedWisdom Physician Review Team
- Last update: Oct. 1, 2008
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