Fictional first aid is often applied in ways that would be useless or outright counterproductive in Real Life. There's the reason of safety, as during CPR or the Heimlich maneuver organs in the way are considered to be expendable. There's the practical reason that the audience might prefer their unconsciousness and revival scene without it turning into Fun Things To Do With Vomit. There's the dramatic reason that a character may not actually know first aid, or the work may be a period piece where medical knowledge is less advanced. There's the likely reason that people Did Not Do the Research.