What is the role of arterial blood gases in the evaluation of acute respiratory distress syndrome (ARDS)?

Updated: Mar 27, 2020
  • Author: Eloise M Harman, MD; Chief Editor: Michael R Pinsky, MD, CM, Dr(HC), FCCP, FAPS, MCCM  more...
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Answer

In addition to hypoxemia, arterial blood gases often initially show a respiratory alkalosis. However, in ARDS occurring in the context of sepsis, a metabolic acidosis with or without respiratory compensation may be present.


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