| BTLS | basic trauma life support |
|---|---|
| EMT-A | emergency medical technician-ambulance; emergency medical technician providing basic life support or... |
| EMT-D | emergency medical technician providing basic life support or defibrillation |
| ALS | acute lateral sclerosis; advanced life support; afferent loop syndrome; amyotrophic lateral sclerosi... |
| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |