What is a flexible nasal endoscopy?
Flexible nasal endoscopy is a procedure that is used to look inside the nose, the back of the nose, throat, voice box and base of the tongue. An endoscope is a type of flexible telescope.
It is a very common test performed while you’re awake, usually in the outpatients' clinic, ward or emergency department
Why do I need the procedure?
Anyone who has a problem with the ear, nose, throat or voice box may need to have this procedure.
About the procedure
The endoscope is a narrow, flexible telescope with a bright light. In a standard fiberoptic endoscope, the image is transmitted through lots of very fine glass fibres to an eyepiece or camera. Sometimes a videocamera is sited at the end of the endoscope and the picture is displayed on a screen.
The endoscope is passed through the nostril to examine the inside and back of your nose, back of the tongue, throat and/or voice box. You’ll be awake during the procedure, and the clinician may ask you to breathe through your nose, puff out your cheeks, speak or swallow.
You can breathe normally through your nose and mouth during the procedure. The procedure usually only lasts a few minutes and can be performed with or without local anaesthetic.
If numbing spray is used, you may feel odd or have difficulty swallowing for up to an hour afterwards. During this time, you cannot eat or drink until the sensation returns. Some people find this feeling uncomfortable but it is temporary.
Alternatives
A rigid telescope can be used to examine the nose and back of the nose.
Risks
Flexible endoscopy is a very safe procedure for both children and adults. In children, it can sometimes trigger breath-holding attacks, so the procedure is done in a safe setting with staff and equipment to support breathing if needed.
The nose may be uncomfortable and you may feel the sensation of something in your throat. The procedure may cause your eyes to water, make you cough, or give a slight nosebleed.
If local anaesthetic is used, it may be sprayed in to your nose 10 minutes before the procedure.
You do not need to wear a mask unless asked, and staff may wear standard clinic clothing or protective items depending on the situation.
Frequently Asked Questions
Am I awake during the procedure?
Yes.
Can I drive after the test?
Yes.
How long does it take?
Less than one minute is common, though the procedure may take longer (especially during the COVID-19 pandemic).
Will I need any medication?
The telescope is covered in water-based lubricant, which allows the telescope to slide more easily past tight areas. A local anaesthetic and/or decongestant spray maybe used.
Will I feel the telescope?
You will usually feel the telescope sliding in. You may feel the telescope at some points of the procedure even if an anaesthetic spray is used.
Will I be able to see what is happening?
In some clinics, a screen is available so you can see the image during or after the procedure.
Can I eat and drink before the procedure?
Yes.
Can I eat and drink after the procedure?
If a nose or throat spray has been used you should not eat or drink for about 20 minutes to an hour (or until your nose and throat feel normal again). You will be told if you cannot eat and drink after the procedure.
Disclaimer: This publication is designed for the information of patients. Whilst every effort has been made to ensure accuracy, the information contained may not be comprehensive and patients should not act upon it without seeking professional advice.