Otosclerosis Overview and Diagnosis

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<p>Impaired movement of the stapes (C)</p> Signup and view all the answers

<p>Autosomal dominant (A)</p> Signup and view all the answers

A hereditary condition causing hearing loss due to abnormal bone growth in the middle ear.

Hearing loss due to problems transmitting sound to the inner ear; common with otosclerosis.

A reddish blush of the tympanic membrane seen in otosclerosis, indicating vascular changes.

A difference in hearing levels between air conduction and bone conduction; significant in otosclerosis diagnosis.

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Tests like Rinne help assess hearing loss types by comparing air and bone conduction.

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Otosclerosis is a hereditary autosomal dominant disease.
It's the most common cause of hearing loss in young adults.
Spongy bone growth within the bony labyrinth affects the stapes footplate.
This prevents vibration transmission to inner ear fluids.
This results in conductive hearing loss.
Otosclerosis is typically bilateral, but one ear may progress faster.
Patients are often unaware of the issue until the hearing loss significantly impacts communication.

Otoscopic Examination: May reveal a reddish blush on the tympanic membrane (Schwartz sign).
Cause of Schwartz Sign: Vascular and bony changes in the middle ear.
Tuning Fork Tests (e.g., Rinne): Reveal good bone conduction and poor air conduction (air-bone gap).
Audiogram: Shows a significant difference (at least 20-25 dB) between air and bone conduction hearing levels (air-bone gap).