| DAo | Descending Aorta |
|---|---|
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
| AAO | American Academy of Osteopathy; American Academy of Ophthalmology; American Academy of Optometry; Am... |
| AAo | ascending aorta |
| AASP | acute atrophic spinal paralysis; American Association of Senior Physicians; ascending aorta synchron... |