What is Nasal Endoscopy?

This also includes observation of any changes to the skin (mucosa) of the airway that can be a factor in sleep related breathing disorders, including changes associated with allergies and/or gastric reflux (GERD). The results of an endoscopy are extremely helpful in determining factors contributing to sleep-related breathing disorders as well as the most appropriate treatment options recommended by the sleep specialist.



The procedure involves looking inside the nose (nasal passages), the throat (pharynx), and the voice box (larynx). It is completed with an endoscope, which is a thin, flexible telescope. The tip of the endoscope contains a light and a tiny camera so the operator can see inside the nose, throat and voice box. Images from the endoscopy are projected onto a computer screen from the video camera and recorded to become a part of the patient’s electronic medical record.

Before introducing the endoscope in the nasal passageway, a small amount of decongestant (Afrin) and local anesthetic/numbing solution (Lidocaine) is sprayed into each nostril. The endoscope is then introduced into the nose, to the space at the back of the nose (the nasopharynx). It then passes down through the space at the back of the mouth (the oropharynx), stopping just above the voice box at the bottom of the throat. 

Nasal endoscopy procedure is done while fully awake, only lasts a couple minutes, usually involves minor discomfort, and is considered a very safe office procedure. The nasal decongestant and anesthetic sprays may cause some mild tingling/burning in the nose and have a bitter taste. The nose may feel uncomfortable, feeling of pressure, and you may feel the sensation of something in your throat. During the procedure, you may be asked to say some words or noises out loud or stick out your tongue. Doing this helps evaluate the airway structures in motion. The procedure may cause your eyes to water and/or trigger a cough. Very rarely, patients may experience a mild nosebleed after the procedure. These side effects are generally mild and resolve very quickly.

Once all the important areas have been inspected, the nasoscope is gently pulled out of the nose. To be safe, it is recommended that you avoid eating or drinking liquids for 20 min after the anesthetic spray (lidocaine) has been applied.

NOTE: Depending on results, repeat testing may be recommended at a later date to identify changes over time. It is possible there could be incomplete visualization of structures with the procedure. No biopsies, cultures or other invasive procedures are done with this procedure. Referral to a specialist maybe recommended if other abnormalities are identified or for other possible management options such as evaluation for surgery.