Generally speaking in what scenarios aside from maybe the mouth is shut tight that the medic needs to do that, i forgot the name, cutting part of someone's throat for breathing aid?
You're thinking of a cricothyroidotomy (crike). A crike is done when an airway is needed fast but the patient can't be intubated. This can be in cases of upper airway trauma or obstruction (anaphylaxis or other allergic reactions, burns, facial fractures).
Happy whumping!















