After 2-jaw surgery, difficulty in breathing through the mouth and the nose is frequently observed due to nasal airway obstruction, edema of lips, cheeks, and tongue, intraoral bleeding, and sometimes maxillo-mandibular fixation. The nasopharyngeal airway (NPA) is usually inserted to facilitate breathing, tamponade nasal bleeding if present, and provide supplemental oxygen after extubation. The NPA is preferable in patients with limited mouth opening or those lightly anesthetized. 1 It is known to be useful for oxygen administration after