| Abbreviation | Definition |
|---|---|
| APC | Activated Protein C |
| APC | Adenomatous Polyposis Coli |
| APC | Aspirin, Phenacetin, and Caffeine |
| APC | Atrial Premature Contractions |
| APCA | Anthropogenic Precursor Culpability Assessment |
| APCOR | Advanced Portable Coronary Observation Radio |
| APD | Acid Peptic Disease |
| APD | Afferent Pupillary Defect |
| APD | Auditory Processing Disorder |
| APE | Acute Pulmonary Edema |
| APE | Arm Position Extended |
| APF | American Physicians and Friends |
| APG | Analyte Physicians Group |
| APG | Associated Physicians Group |
| APGAR | Appearance Pulse Grimace (reflex) Activity Respiration |
| APH | Ante-Partum Hemorrhage |
| APHD | Apparent Pregnene Hydroxylation Deficiency |
| APKD | Adult Polycystic Kidney Disease |
| APLA | Anti Phospholipid Antibody |
| APLS | Advanced Pediatric Life Support |