| Abbreviation | Definition |
|---|---|
| RAS | Renin-Angiotensin System |
| RAST | Regional Assessment Support Team |
| RAW | Resistance in AirWays |
| RBBH | Robert Breck Brigham Hospital |
| RBDD | Rare Bleeding Disorders Database |
| RBH | Royal Brisbane Hospital |
| RBH | Royal Brompton Hospital |
| RBH | Rukmani Birla Hospital |
| RBHC | Regional Behavioral Health Center |
| RBR | Relative Bed Rest |
| RBWH | Royal Brisbane and Women's Hospital |
| RCC | Mary Babb Randolph Cancer Center |
| RCC | Red blood Cell Count |
| RCD | Recovery Center of Delaware |
| RCH | Raleigh Community Hospital |
| RCH | Riverside Community Hospital |
| RCH | Rockville City Hospital |
| RCHT | Royal Cornwall Hospital Truro |
| RCHT | Royal Cornwall Hospital Trust |
| RCHT | Royal Cornwall Hospitals Trust |