You respond to the local rodeo arena for a bull rider. The scene is safe, and the patient is lying in the middle of the arena unconscious. His airway is open, and he is breathing at 20 breaths/min. His pulse is 128 beats/min and blood pressure is 110/64 mm Hg. There is no obvious bleeding. Bystanders tell you he was thrown into the air and landed on the bull's head. He was not wearing a vest. Which of the following is NOT indicated in blunt trauma to the chest?

A. Bruising of the lungs and heart
B. Fracture of whole areas of the chest wall
C. Damage to the aorta
D. Dissection of the carotid arteries

Answer: D. Dissection of the carotid arteries