ABG Components

ABG Components: 

  • pH = measured acid-base balance of the blood
  • PaO2 = measured the partial pressure of oxygen in arterial blood
  • PaCO2 = measured the partial pressure of carbon dioxide in arterial blood
  • HCO3 = calculated concentration of bicarbonate in arterial blood
  • Base excess/deficit = calculated relative excess or deficit of base in arterial blood
  • SaO2 = calculated arterial oxygen saturation unless a co-oximetry is obtained, in which case it is measured

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