What is the role of arterial blood gas analysis in the diagnosis of diffuse parenchymal lung diseases (DPLDs)?

Updated: Sep 15, 2020
  • Author: Eleanor M Summerhill, MD, FACP, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Arterial blood gas analysis often reveals an increased alveolar-arterial partial pressure of oxygen gradient and a reduced partial pressure of oxygen. Oxygen desaturation is common. All of these findings may be worsened with exercise.


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