How are arterial blood gases (ABGs) results interpreted?

Updated: May 14, 2020
  • Author: Kevin McCarthy, RPFT; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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ABGs provide three assessments of the function of the respiratory system: evaluation of oxygenation (PaO2 [mm Hg] and A-a oxygen gradient PO2), evaluation of the adequacy of ventilation (PaCO2 [mm Hg]), and evaluation of the lung's role in acid-base balance of the arterial blood (pH, PaCO2).

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