| PaO2 | Oxygen Pressure; amount of O2 in arterial blood |
|---|---|
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| (A-a)DN2 | alveolo-arterial nitrogen tension difference |
| AAG | 3-alkaladenine deoxyribonucleic acid glycosylase; allergic angiitis and granulomatosis; alpha-1-acid... |
| A-a O2 | alveolo-arterial oxygen tension |