PO2

Note: PO2 and PaO2 are used interchangeably in the context of the Critical Care and Medicine Data. PO2 or PaO2 is the partial pressure of oxygen in the patient's arterial blood. It is an element of the Arterial Blood Gases.

If FiO2 is < =49 % or less then choose the worst PaO2 from any of the blood gases collected according to Apache II General Collection Guidelines.

If FiO2 is >= 50% then choose the worst AaDO2

• See APACHE Scoring table
• See FiO2 table