Deafness known as following:
- Personal and family history
- Development of deafness
- Associated signs like: otological, vestibular, neurological
- Practice otoscopy
- Acoumetry (pitch) tests Rinne and Weber
- Neurological and vestibular testing
- Keynote tone audiometry; hearing thresholds of pure tone air and bone conduction
- Speech audiometry
- Impedance, tympanometry and acoustic reflex
- Auditory evoked potentials: auditory thresholds of young children and sensorineural hearing loss
Sometimes specific pathologies of the middle ear is observed as otitis externa, foreign body in the ear canal, cap earwax.
Also diseases of the middle ear as conductive hearing loss by blocking stapedo-vestibular progressing to the inner ear. As autosomal dominant with incomplete penetrance and variable expressivity. Reached the young woman, with advanced pregnancy.
The diagnosis shows an asymmetric bilateral deafness predominant transmission over the bass, improved noise with normal eardrums. The tympanogram is almost always normal; absence of acoustic reflex (sometimes incomplete blocking effect = on-iff).
Note: There is no need to practice a CT scan in cases of otosciérose suspension, except to help diagnosis in case of surgical failure, or in any form endocochéaire exceptional.
Deafness
vestibular testing, tympanogram, otitis externa, deafness, audiometry
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