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Diagnostic Tests » Alveolar-to-arterial oxygen gradient
 

Alveolar-to-arterial oxygen gradient

Alveolar-to-arterial oxygen gradient

Alveolar-to-arterial oxygen gradient: An alveolar-to-arterial oxygen gradient is the difference between alveolar and arterial oxygenation. This test determines how well the lungs are delivering oxygen to the blood.

Alveolar-to-arterial oxygen gradient: Other Names

Other names for Alveolar-to-arterial oxygen gradient include:

  • A-aDO2 ratio
  • A-a ratio

Symptoms Associated with Alveolar-to-arterial oxygen gradient

These symptoms may be diagnosed by, screened for, or associated with Alveolar-to-arterial oxygen gradient:

  • Reduced arterial blood oxygen (hypoxemia, not hypoxia)

Diseases Associated with Alveolar-to-arterial oxygen gradient

These diseases or medical conditions may be diagnosed by, screened for, or associated with Alveolar-to-arterial oxygen gradient:

  • Chronic pulmonary obstructive disease (elevated gradient)
  • Pneumothorax
  • Arterial septal defects
  • Collapsed lung
  • Blocked pulmonary artery or vein (pulmonary embolism)
  • Accumulation of fluid in the lungs (pulmonary edema)

Basic Information: Alveolar-to-arterial oxygen gradient

Disease or Condition count: 0; see list of conditions below. These are the diseases or medical conditions in which the medical test 'Alveolar-to-arterial oxygen gradient' may be involved.

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