| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
|---|---|
| (A-a)DN2 | alveolo-arterial nitrogen tension difference |
| A-a O2 | alveolo-arterial oxygen tension |
| AaPCO2, (A-a)PCO2 | alveolo-arterial carbon dioxide tension difference |
| AaPO2, (A-a) PO2 | alveolo-arterial oxygen tension difference |