Decision tool to specify whether a CT after head trauma is indicated. Often compared to the New Orleans Criteria. More on their comparative performance here.

Inclusion Criteria

• GCS 13-15
• Age ≥ 16yr
• No coagulopathy nor on anti-coagulation
• No obvious open skull fx

Rule

Head CT not required if NONE of the following are present

• Age ≥ 65 years
• Vomiting > 2 time
• Suspected open or depressed Skull Fracture
• Signs suggesting basal skull fracture:
  • Hemotympanum
  • Racoon eyes
  • CSF otorrhea or rhinorrhea
  • Battle’s sign (bruising around mastoid process)
• GCS < 15 at 2 hours post injury
• Retrograde Amnesia > 30min
• Dangerous mechanism
  • Pedestrian struck by vehicle
  • Ejection from motor vehicle
  • Fall from elevation >3 feet or 5 stairs

Source: WikEM