| AFF | atrial fibrillation; atrial filling fraction; atrial flutter |
|---|---|
| AAI | acute alveolar injury; Adolescent Alienation Index; American Association of Immunologists; atrial in... |
| AOO | anodal opening odor; atrial asynchronous (competitive, fixed-rate) [pacemaker] |
| TAPE | temporary atrial pacemaker electrode |
| VDD | atrial synchronous ventricular inhibited [pacemaker]; vitamin D-dependent |