| Abbreviation | Definition |
|---|---|
| EI | electrical injury |
| EI | electrolyte imbalance |
| EI | elongation index |
| EI | elution inhibition |
| EI | emotionally impaired |
| EI | emphysema index |
| EI | end inspiration |
| EI | endotracheal intubation |
| EIA | Equality Impact Assessment |
| EIP | early intervention in psychosis |
| EIP | electrical impedance plethysmography |
| EIP | esophageal intramural pseudodiverticulosis |
| EIP | extensor indicis proprius |
| EIP | extrinsic incubation period |
| EIS | early intervention service |
| EIS | endometrial carcinoma in situ |
| EIS | endoscopic injection sclerotherapy |
| EIS | European Infarction Study |
| EIT | Early Intervention Teams |
| EITS | essential IT skills |