Prediction Rule Definitions
PECARN prediction rule for child 2-18 years of age with minor blunt head trauma
Child is at very low risk of clinically-important traumatic brain injury if all the following are met:
GCS =15 and no other signs of abnormal mental status
No history of loss of consciousness
No severe mechanism of injury*
No history of vomiting
No severe headache
No signs of basilar skull fracture
*Severe mechanism is defined as any of the following: fall of more than 5 feet; motor vehicle crash with patient ejection, death of another passenger, or rollover; pedestrian or bicyclist without helmet struck by a motorized vehicle; or head struck by a high impact object.
Adapted with permission from Kuppermann, N. 2012, from Identification of children at very low risk of clinically-important brain injuries after head trauma: a prospective cohort study. Lancet 2009;374:1160-70.