| ARDS | acute respiratory distress syndrome; adult respiratory distress syndrome |
|---|---|
| AWS | Alagille-Watson syndrome; alcohol withdrawal syndrome |
| BCS | battered child syndrome; blood cell separator; British Cardiac Society; Budd-Chiari syndrome |
| BIS | bone cement implantation syndrome; Brain Information Service; building illness syndrome |
| BTS | blood transfusion service; blue toe syndrome; bradycardia-tachycardia syndrome |