By having the patient execute some simple manoeuvres, it is possible to demonstrate the dynamic behaviour of the airway under conditions that promote collapse or which help to prevent collapse. For a view of the structures visible during dynamic nasopharyngoscopy, click here . A flexible fiberoptic nasopharyngoscope is shown. This can be used to examine the upper airway and also the top portion of the trachea. View of a nasal passage Structures that can be seen with the flexible scope are the nasal septum and the turbinates.
Special note is taken of abnormal swelling, polyps and congenital abnormalities.
View of the nasopharynx Structures to note are the adenoids and the depth and height of the nasopharynx. This is the part of the upper airway that contains the tonsils and the tongue. This is a very complex structure that forms the gateway to the lungs and which produces speech. In Muller's manoeuvre, the patient is asked to try and take a breath in while the mouth is closed and the nose is pinched shut. This generates a negative pressure in the upper airway.