A nasendoscopy is the examination of the nose and upper airways by the use of a small flexible tube (endoscope) that allows an ear nose throat doctor to examine these areas
The examination examines the nose (nasal cavity), the back of the nasal cavity (nasopharynx), the back of the mouth and tongue (oropharynx) and upper part of the voice box (laryngo-pharynx)
The area to be examined is illuminated by a light – images of the area are transmitted via optical fibres within the endoscope to a viewing port or TV monitor
Permanent photographs or videotapes of the examination may be made
Common indications for nasendoscopy include:
A blocked nose
Nasal polyps
Recurrent bleeding from the nose
Investigation of speech difficulties
Hoarseness
Persistent sore throat and problems with eating and drinking
Nasendoscopy technique
Most procedures are done in the clinic
One or both sides of the nasal cavity and back of the throat may be sprayed using anaesthetic spray
The nasendoscope is introduced into the nose and the nasal cavity, throat and upper airways and voice box are then examined while the patient breathes lightly through the mouth
The procedure usually takes a few minutes
At the end of the procedure the nasendoscope is easily removed and the patient is fit to leave after the consultation
Laryngoscopy
Laryngoscopy is a form of indirect laryngoscopy where the larynx is visualised with a fiberoptic or digital laryngoscope placed transnasally or transorally
This provides an excellent view of the voice box and vocal cords
This procedure is very well tolerated by the patient sitting in an office exam chair
The images from laryngoscopy can be recorded
The images may be magnified allowing for detailed examination of the larynx
Discomfort and after effects
It is generally a safe procedure, although minor irritation to the lining of the structures can occur
There is some mild discomfort during the procedure as the endoscope causes some irritation to the lining of the nose, throat and upper airways, however this rapidly disappears at the end of the examination
