Because - an emetic is given to force the patient vomit. If given to an unconscious patient - the patient could choke if the vomit enters the airway.
Implied consent.
A medication or substance given to induces vomiting
The patient remained unconscious after the accident.
Rectal
yes
Whether they're conscious or unconscious you verify the patient's name and date of birth (verbally when conscious, armband when not). Also explain what you're doing to them whether they're conscious or not.
high fowlers
hearing
unconscious
Implied consent applies to the unconscious patient - if the patient were conscious they would want your help.
wake them up and buy them a hot dog
coma