Children's Head Injury Algorithm for Prediction of Important Clinical Events (CHALICE)

Age of the patient (enter 0 if < 12 months old)

Does the child have a history of epilepsy?

Glasgow coma score (enter from 3 to 15)

Witnessed duration of any loss of consciousness

Duration of any antegrade or retrograde amnesia

Number of discrete episodes of vomiting

Number of seizure episodes after the head injury

Height of fall

• abnormal drowsiness?

• findings suspicious for a non-accidental injury?

• findings suspicious of a penetrating skull injury?

• findings suspicious of a depressed skull injury?

• a tense fontanelle?

• clinical signs of a basal skull fracture?

• any focal neurological sign?

• a bruise, laceration or swelling > 5 cm in dimension?

• a pedestrian or cyclist in a traffic accident?

• in a traffic accident with the vehicle traveling > 40 miles per hour?

• have a high speed injury to head from a projectile or object?