A potential complication of using a nasal airway (NPA) that is too long for the patient is:

• A. Stimulates the vagal nerve, reduces HR
• B. Causes nasal mucosal trauma
• C. Increases airway resistance
• D. May cause epistaxis

Answer: (A)

A nasal airway that is longer than needed can push the tip into the posterior nasopharynx and irritate receptors that trigger the vagus nerve. Vagal stimulation slows the heart rate, so in a child this can lead to bradycardia, which may compromise perfusion. This specific risk is directly tied to the airway being too long because it increases the chance of contacting sensitive posterior tissues that provoke that reflex. Other issues like nasal mucosal trauma or epistaxis are related to how the device contacts the nasal mucosa, and while they can occur, they aren’t the consequence of excessive length in the same direct way. An excessively long airway can also alter feelings of obstruction or cause discomfort, but the key clinically important reaction tied to length is the vagal-induced bradycardia. To prevent this, ensure proper sizing and measure from the nostril to the earlobe or angle of the jaw before placement, and monitor for a sudden drop in heart rate after insertion.