| aMVL | anterior mitral valve leaflet |
|---|---|
| AO | abdominal aorta; achievement orientation; acid output; acridine orange; ankle orthosis; anodal openi... |
| AOV, AoV | aortic valve |
| ASAH | antibiotic sterilized aortic valve homograft |
| ASV | anodic stripping voltammetry; antisiphon valve; antisnake venom; avian sarcoma virus |