| A | B |
| A&P | auscultation and percussion, anatomy and physiology |
| ABE | Acute bacterial endocarditis |
| AD | Alzheimers Disease or right ear |
| AIDS | Acquired immune deficency syndrome |
| am | between midnight and noon |
| AMA | against medical advice or American Medical Association |
| amb | ambulatory or ambulate |
| AMI | acute myocardial infarction |
| amp | ampule |
| amt | amount |
| AP | angina pectoris or anteroposterior |
| AS | left ear |
| as tol | as tolerated |
| ASA | aspirin |
| ASAP | as soon as possible |
| AU | both ears |
| ax | axillary |
| BE | barium enema |
| bid | twice a day |
| BM | bowel movement |
| BOM | bilateral otitis media |
| BP | blood pressure |
| BS | blood sugar, bowel/breath sounds |
| Bx | biopsy |
| C | Celsius |
| /c | with |
| C&S | culture and sensitivity |
| c/o | complains of |
| Ca | calcium |
| CA | cancer |
| CABG | coronary artery bypass graft |
| CAD | coronary artery disease |
| cal | calorie |