Are you for real?!
Give sugar for a comatose trauma patient? I guess TBI is of no concern to you?!
Unresponsive Trauma patients do not come in to the ER with Dextrose bags hanging or with narcan on board. In fact there is no coma protocol in EMS (at least NY and the surrounding states) EMS should assess and if they find a problem refer to the appropriate protocol as a guideline and treat accordingly.
All changes if there is an indication or detailed assessment (which should be done in route to the trauma center) reveals underlying medical issues. Then again, EMS should not administer Narcan for the comatose patient that has a patent airway and is spontaneously breathing, there is nothing wrong with an overdosed patient that is sleeping, but the same cannot be said with the patient that has internal injuries or massive brain trauma that can only be corrected in the OR.
The more you post, the more evident it is that you are very unfamiliar with the entire preshopital and in hospital emergency medicine approach.