Any suggestion is welcomed.
Removing the cervical collar makes the positioning of the laryngoscope easier. Therefore if an assistant is present to hold in line traction that is the method I would use. If sedation is needed propofol is probably prefered as its short duration of action is probably better that a benzodiazapine. I usually give the patient one attempt at an intubation with the collar, but, by the time I am called, someone has usually taken that one try and I do it without the collar, with inline traction. Nasotracheal intubation in a patient with suspected C-spine injury is never performed by our Emergency Team, as these patients may also have undiagnosed skull base fractures.