Abbreviation |
Meaning |
| A |
| TOP |
| A&P |
Auscultation and percussion |
| A&P |
Anterior and posterior |
| A-fib |
Atrial fibrillation |
| a.c. |
Before meals |
| A/a |
Alveolar-arterial oxygen gradient |
| AAA |
Abdominal aortic aneurysm |
| AB / ab |
Abortion |
| ABCs |
Airway, breathing, circulation |
| ABG |
Arterial blood gas |
| ABO |
A system of classifying blood groups |
| AC |
Acromioclavicular |
| AC |
Abdominal Circumference |
| ACE |
Angiotensin converting enzyme |
| ACL |
Anterior cruciate ligament |
| ACLS |
Advanced Cardiac Life Support |
| ACTH |
Adrenocorticotropic hormone, corticotropin |
| AD |
Alzheimer's dementia or disease |
| ad lib |
As desired |
| ADH |
Antidiuretic hormone |
| ADL |
Activities of daily living |
| AFB |
Acid-fast bacilli |
| AFL |
Atrial flutter |
| AFP |
Alpha-fetoprotein |
| AFV |
Amniotic fluid volume |
| AI |
Artificial Insemination |
| AI |
Amnioinfusion |
| AIDS |
Acquired immunodeficiency syndrome |
| AKA |
Above knee amputation |
| ALL |
Acute lymphocytic leukemia |
| ALT |
Alanine aminotransferase |
| AMA |
Against medical advice |
| ANA |
Antinuclear antibody |
| AP |
Anteroposterior |
| appy |
Appendectomy |
| APTT |
Activated partial thromboplastin |
| AQ |
Water |
| ARC |
AIDS-related complex |
| ARDS |
Adult respiratory distress syndrome |
| ARF |
Acute renal failure |
| ASAP |
As soon as possible |
| ASHD |
Atherosclerotic heart disease |
| ASO |
Antistreptolysin-O |
| AST |
Aspartate aminotransferase |
| ATN |
Acute tubular necrosis |
| ATNC |
Atraumatic, normocephalic |
| AV |
Arteriovenous, atrioventricular |
| AVB |
Atrioventricular block |
| AVM |
Arteriovenous malformation |
| AVN |
Atrioventricular node |
| AVR |
Aortic valve replacement |
