A 40 year old mine worker is brought to the emergency room with a suspected carbon monoxide poisoning. What will be expected in the blood ABG?
CO2 has 210 times more affinity to Hb than O2 so O2 saturation is less. PO2 is normal since dissolved O2 is normal.
PO2 normal, O2 saturation less with slightly decreased PCO2
PO2 less, O2 saturation normal
PO2 high, O2 saturation normal
PO2 less, O 2 saturation decreased