Template:PECARN Head CT Rule

<2 years old

PECARN Under Age 2

Any 1 of the following?

• GCS ≤14
• Altered Mental Status
• Palpable Skull Fracture

Then obtain a Non-Con Brain CT (4.4% risk of cTBI)

1 or more of the following?

• Non-frontal scalp hematoma
• LOC ≥ 5 seconds
• Severe injury mechanism
  • pedestrian or bicyclist without helmet struck by motorized vehicle
  • fall >1m or 3ft
  • head struck by high-impact object
• Abnormal activity per parents

Then consider a Non-Con Brain CT or Observation (0.9% risk of cTBI)

≥2 years old - 18 years

PECARN Age 2 and Up

Any 1 of the following?

• GCS ≤14
• Altered Mental Status
• Signs of a basilar skull fracture

Then obtain a Non-Con Brain CT (4.3% risk of cTBI)

1 or more of the following?

• History of vomiting^
• LOC
• Severe injury mechanism
  • Pedestrian or bicyclist without helmet struck by motorized vehicle
  • Fall >2m or 5ft
  • Head struck by high-impact object
• Severe headache

Then consider a Non-Con Brain CT or Observation (0.9% risk of cTBI)

^Consider observation in place of imaging in children with isolated vomiting (no other indication) as the sole risk factor (0.2% risk of cTBI)