| RHA | Regional Health Authority; right hepatic artery |
|---|---|
| RhA | rheumatoid arthritis |
| RHB | right heart bypass |
| RHBF | reactive hyperemia blood flow |
| RHBs | Regional Hospital Boards |
| RHC | resin hemoperfusion column; respiration has ceased; right heart catheterization; right hypochondrium |
| RHCSA | Regional Hospitals Consultants' and Specialists' Association |
| RHD | radiological health data; relative hepatic dullness; renal hypertensive disease; rheumatic heart disease |
| RHE | retinohepatoendocrinologic [syndrome] |
| RHEED | reflection high-energy electron diffraction |