| Abbreviation | Definition |
|---|---|
| ER | Emergency Room |
| ERCP | Endoscopic Retrograde Cholangiography and Pancreatography |
| ERCP | Endoscopic Retrograde CholangioPancreatography |
| ERDH | Escolastica Romero District Hospital |
| ERG | ElectroRetinoGram |
| ERG | Evidence Review Group |
| ERR | Emergency Response Resources |
| ERT | Emergency Response Team |
| ERY | Erythromycin |
| ES | Emergency Surgery |
| ES | Extended Scrub |
| ES | Eye Safety |
| ESCAPE | Eliminate Substitute Control And Prevent Exposure |
| ESCOP | European Scientific Cooperative On Phytotherapy |
| ESD | Endoscopic Submucosal Dissection |
| ESH | Eastern State Hospital |
| ESH | Eleanor Slater Hospital |
| ESN | Eldor Spinal Needle |
| ESSH | Eastern State School and Hospital |
| ESWL | Extracorporeal Shock-Wave Lithotripsy |