'OK, we've got a year old boy, rear seat unrestrained passenger. Ejected from the car through the front windshield after a frontal impact, combined speed around 50 miles per hour. The mother's still trapped in the car. The kid's breathing but he's unresponsive. We just scooped him onto the spine board & ran him in here.'

The boy is strapped to the spine board with a cervical collar and a reservoir oxygen mask in place. There's some minor bruising over the left chest and upper abdomen and an obviously broken and deformed left femur and tibia, with an open wound over the shin.

You ask Julian to attach some monitoring while you start your assessment.