| PaO2 | partial oxygen tension in arterial blood; partial pressure of oxygen in arterial blood |
|---|---|
| QO2 | oxygen quotient; oxygen utilization |
| (A-a)DN2 | alveolo-arterial nitrogen tension difference |
| AaPCO2, (A-a)PCO2 | alveolo-arterial carbon dioxide tension difference |
| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |