A 23-year-old, previously healthy man was involved in a motor | Uworld | Step 1

A 23-year-old, previously healthy man was involved in a motor vehicle collision. He lost consciousness at the scene but recovered by the time emergency medical services arrived. The patient was alert and awake in the ambulance but lost consciousness again soon after arriving at the emergency department. His breath smells of alcohol. Blood pressure is 130/90 mm Hg, pulse is 68/min, and respirations are 12/min. A bruise is noted over the left temple area. The left pupil is mildly dilated.