| AAA |
Abdominal aortic aneurysm |
A&P
|
Auscultation and Percussion |
A, B, AB, O
|
Blood types in ABO Blood Group |
AB, Ab, ab
|
Antibody; Abortion |
| ABC |
Aspiration biopsy cytology |
ABG
|
Arterial blood gas(es) |
| AC |
Air conduction |
A.C.*
|
Before meals |
| Acc |
Accommodation |
| ACE |
Angiotensin-converting enzyme (inhibitor) |
| ACL |
Anterior cruciate ligament |
| ACS |
Acute coronary syndrome |
| ACTH |
Adrenocorticotropic hormone |
| AD |
Alzheimer disease |
| AD* |
Right ear |
| ADH |
Antidiuretic hormone (vasopressin) |
| ADHD |
Attention-deficit hyperactivity disorder |
| ad lib. |
As desired |
| ADLs |
Activities of daily living |
| AE |
Above the elbow |
| AED |
Automatic external defibrillator |
| AF |
Atrial fibrillation |
| AFB |
Acid-fast bacillus (TB organism) |
| AGN |
Acute glomerulonephritis |
| AI |
Artificial insemination |
| AICD |
Automatic implantable cardioverter defibrillator |
| AIDS |
Acquired immune deficiency syndrome |
| AK |
Above the knee |
| alk phos |
Alkaline phosphatase |
| ALL |
Acute lymphocytic leukemia |
| ALS |
Amyotrophic lateral sclerosis; also called Lou Gehrig disease |
| ALT |
Alanine aminotransferase |
| AM, a.m. |
in the morning or before noon |
| AML |
Acute myelogenous leukemia |
| ANS |
Autonomic nervous system |
| ant |
Anterior |
| AOM |
Acute otitis media |
| AP |
Anteroposterior |
| APC |
Antigen-presenting cell |
| APTT |
Activated partial thromboplastin time |
| ARDS |
Acute respiratory distress syndrome |
| ARF |
Acute renal failure |
| ARMD, AMD |
Age-related macular degeneration |
| AS |
Aortic stenosis |
| AS* |
left ear |
| ASD |
Atrial septal defect |
| ASHD |
Arteriosclerotic heart disease |
| AST |
Angiotensin sensitivity test; aspartate aminotransferase |
| Ast |
Astigmatism |
| ATN |
Acute tubular necrosis |
| AU* |
both ears |
| AV |
Atrioventricular; arteriovenous |
