ENT Specialist POSTERIOR RHINOSCOPY

POSTERIOR RHINOSCOPY

Definition: This is a procedure used to examine the posterior part of the nasal cavity and nasopharynx. Procedure:
  1. The mouth is opened. The tongue is depressed by means of a tongue depressor, the mirror is dipped in antifog solution or warmed over the flame to avoid deposition of moisture.
  2. A posterior rhinoscopy mirror is then passed behind the soft palate with the mirror facing upwards.
  3. The patient is then told to relax and take deep breaths.
ENT Specialist Screenshot 2020 11 28 Ganpati nose
Structures visualised:
  1.  Laterally: Eustachian tube opening is seen on the posterior end of the inferior turbinate.
  2.  Medially:  Posterior end of middle, inferior and superior turbinates and posterior part of septum.
  3.  Inferiorly: End posterior surface of the soft palate.
  4. Rosenmullers fossa is seen behind the Eustachian tube.
ENT Specialist Screenshot 2020 11 28 Ganpati nose
Problems in Posterior Rhinoscopy In about 20% of the patients it is not possible to examine the postnasal space by posterior rhinoscopy mirror. A nasopharyngoscopy (fibre-optic) or rigid endoscopy in preferred in such cases. The nasopharynx can also be visualized by diagnostic FESS. Gag Reflex: In some sensitive patients this prevents proper examinations. Children are usually not very co-operative in this procedure.

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