What is the role of arterial blood gas in the diagnosis of atelectasis?

Updated: Oct 22, 2020
  • Author: Tarun Madappa, MD, MPH; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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Answer

Atelectasis of a significant size can result in hypoxemia as measured on arterial blood gas determinations. Arterial blood gas evaluation may demonstrate that despite a low PaO2. The PaCO2 level is usually normal but may be low as a result of the increased minute ventilation.


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