[Verified Answer]: You were assisting other EMS personnel…

You were assisting other EMS personnel with back boarding a patient following a high-speed motor vehicle collision. The young male patient is so restless that it is a real challenge to get the patient mobilize properly. The patient has no obvious injuries, but the medic wants to transport the patient because of the mechanism, the patient becomes more restless and less coherent as you proceed, which of the which these most likely suspect as the cause for this change