Size the airway. Place the flange against the nostril, and the end should touch the patient’s lower earlobe. Coat the tip and the entire length with a water-based lubricant.
Insert the lubricated airway into the larger nostril with the curvature following the floor of the nose. If you are using the right nare, the bevel should face the septum. If using the left nare, insert the airway with the tip of the airway pointing upward, which will allow the bevel to face the septum.
Gently advance the airway. If using the left nare, insert the nasopharyngeal airway until resistance is met. Then rotate the nasopharyngeal airway 180 into position. This rotation is not required if using the right nostril.
Continue until the flange rests against the skin. If you feel any resistance or obstruction, remove the airway and insert it into the other nostril.