Which of the following is not a definitive airway?
High-Yield Explanation
DEFINITIVE AIRWAYS Definitive airways prevents aspiration of gastric content, allows for control of ventilation and permits delivery of higher concentrations of oxygen. They include endotracheal tubes (nasotracheal / orotracheal), tracheostomy and cricothyroidotomy. NON DEFINITIVE AIRWAYS They do not protect the patient from gastric aspiration. The concentration of oxygen delivered to the patient is lower. But they have the advantage of being easier to inse. They can even facilitate inseion of definitive airways. (Ceain laryngeal mask airways are designed to facilitate inseion of endotracheal tubes.) e.g. Laryngeal mask airway, Oropharyngeal airway, Nasopharyngeal airway ref : willey 10th ed