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examination of secretory otitis media, diagnosis of secretory otitis media

examination of secretory otitis media, diagnosis of secretory otitis media

Common examination of secretory otitis media

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(1) Tympanic membrane: The relaxed part or the whole tympanic membrane is invaginated, showing that the light cone is shortened, deformed or disappeared, the malleus handle is displaced backward and upward, the short process of hammer bone is obviously protruded, and the included angle between anterior and posterior folds becomes smaller. When tympanic membrane loses normal luster, it is single yellow, orange-red, bright or amber, and the light cone is deformed or displaced. Chronic can be gray blue or milky white, tympanic membrane tension has dilated microvessels, short prominent than chalky, hammer bone handle is relief. If the liquid is serous and does not fill the tympanum, the liquid plane can be seen through the tympanic membrane. This liquid surface is like an arc hair, which is called a hair line. The concave surface is upward. When the head position changes, its parallel relationship with the ground remains unchanged. Bubbles can be seen through the tympanic membrane, and bubbles can increase after the Eustachian tube is blown. Tympanic membrane movement is limited by pneumatic otoscopy.

(2) The sound of pulling out the bottle stopper: After pressing the tragus tightly, release it quickly, and test it in both ears. The patient feels that the affected ear has a sound similar to that when pulling out the bottle stopper.

(3) Hearing examination: Tuning fork test and pure music listening valve test show conductive deafness. Hearing loss varies from government to government, and the severe hearing loss can reach about 40dB HL. Because the amount of effusion often changes, the hearing threshold may fluctuate to some extent. Hearing loss is mainly at low frequency, but due to the changes of middle ear ship structure and impedance in spring, the hearing of high frequency air conduction and bone conduction can also be objectively decreased, and the hearing will be improved after effusion is discharged. Acoustic conduction diagram is of great value in diagnosis, and flat type (type B) is a typical curve of secretory otitis media; High negative force type (C3 type) shows dysfunction of tympanopharyngeal tube, and some of them have tympanic effusion. If hearing impairment is significant, auditory brainstem response and otoacoustic emission should be examined to determine whether it affects the inner ear.

(4) CT scan showed that the air cavity density of middle ear system increased in different degrees.

(5) Secretory otitis media can develop into adhesive otitis media or tympanosclerosis.


guidelines for Secretory Otitis Media-Secretory Otitis Media

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