Prediction Rule Definition
PECARN prediction rule for child younger than 2 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 (LOC) or LOC<5 seconds
No severe mechanism of injury*
No temporal, parietal, or occipital scalp hematoma
Acting normally per parent
No palpable or suspected skull fracture
*Severe mechanism is defined as any of the following: fall of more than 3 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.