Definitions of injury severity
| Severity of traumatic brain injury | Definition |
|---|---|
| Mild | An injury causing unconsciousness for less than 15 minutes and a GCS after initial resuscitation of 13–15 |
| Moderate | An injury causing unconsciousness for more than 15 minutes and a GCS after initial resuscitation of 9–12 |
| Severe | An injury causing unconsciousness for more than 6 hours and a GCS after initial resuscitation of 3–8 |