Other names. u Secretory otitis media, Serous otitis media Glue ear Nonpurulent otitis media, Catarrhal otitis media
◼ Other names: ◼ Secretory otitis media, ◼ Serous otitis media, ◼ Glue ear, ◼ Nonpurulent otitis media, ◼ Catarrhal otitis media
Pathogenesis Dysfunction of Eustachian tube a obstruction of Eustachian tube Mechanic obstruction u enlarged adenoid tumor enlarged inferior turbinate Non mechanic obstruction a Weakness of related muscl Clearance and defense Immotile cilia syndrome 1. Eardrum rcutar canals B Vestibular nerve Note Eustachian tube
Pathogenesis ◼ Dysfunction of Eustachian tube ◼ Obstruction of Eustachian tube ◼ Mechanic obstruction ◼ enlarged adenoid, tumor, enlarged inferior turbinate ◼ Non mechanic obstruction ◼ Weakness of related muscle, ◼ Clearance and defense ◼ Immotile cilia syndrome
Pathogenesis Infection PCR detects the middle ear fluid, positive findings was 70% a S pneumonia, haemophalus influenzae, haemolytic streptococcus u Immunity Middle ear is a isolated immune system Inflammatory mediators Specific antibody immunologic complex Antigen may from adenoid or nasopharygeal lymph
Pathogenesis ◼ Infection ◼ PCR detects the middle ear fluid, positive findings was 70% ◼ S pneumonia, haemophalus influenzae, haemolytic streptocuccus ◼ Immunity ◼ Middle ear is a isolated immune system ◼ Inflammatory mediators ◼ Specific antibody, immunologic complex ◼ Antigen may from adenoid or nasopharygeal lymph
Classification of otitis media Otitis meda with effusion; the presence of middle ear effusion If the middle ear effusion is present for 8 Weeks or longer, it is classified chronic otitis media with effusion
Classification of Otitis media ◼ Otitis meda with effusion: the presence of middle ear effusion. ◼ If the middle ear effusion is present for 8 weeks or longer, it is classified chronic otitis media with effusion
Microbiology of otitis media Bacteria can be isolated from one third of patient who have OME The most common are s pneumonia, H influenzae and m catarrhalis (using traditional culture method) By using PCr these three bacteria were detected in approximately 70% of Chronic middle ear effusion
Microbiology of otitis media ◼ Bacteria can be isolated from one third of patient who have OME. The most common are S pneumonia, H influenzae, and M catarrhalis (using traditional culture method). ◼ By using PCR, these three bacteria were detected in approximately 70% of Chronic middle ear effusion