Physiology General 38d77f3e Aerial blood gas analysis in Carbon monoxide poisoning shows: A PO2 less, O2 saturation normal B PO2 normal, O2 saturation less with normal or slightly decreased PCO2 C PO2 less, O2 saturation normal D PO2 less, O2 saturation decreased High-Yield Explanation B i.e. PO2 normal O2, saturation less with normal or slightly decreases PCO2.