OME is the accumulation of non-inflammatory exudate in the middle ear cavity following a series of pathological changes in the mucous membrane of the middle ear.
Negative pressure in middle ear cavity
Retraction of TM
Formatting of sterile effusion in the middle ear cavity.
Seasonal or allergic particles inhalation or food stuff
Obstruct ET by oedema & also lead to increase secretory activity as middle ear mucosa acts as a shock organ.
Inadequate antibiotic therapy in ASOM
Low grade infection lingers on
Increase number of Goblet cells & mucous glands
Mucosa secrets more fluid
Adeno & Rhino virus of URT
Invade middle ear mucosa
Increase secretory activity
AIM: 1. Removal of fluid. 2. Prevention of recurrence.
1. Myringotomy & aspiration fluid:
Incision made in TM & fluid aspirated with suction.
Saline or mucolytic agent (chymotrypsin solution)
2. Grommet insertion: Provide continued aeration of middle ear.
3. Tympanotomy or cortical mastoidectomy: For removal of loculated thick fluid or other pathology (cholesterol granuloma).
4. Surgical treatment of causative factor: Adenoidectomy, tonsillectomy, wash out of maxillary antrum.
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