Otosclerosis

A 28-year-old woman presents with progressive bilateral hearing loss over the past 2 years. She reports tinnitus and occasional vertigo. On otoscopy, the tympanic membranes appear normal. Audiometry shows a conductive hearing loss with a characteristic dip at 2 kHz (Carhart bone conduction notch). Tympanometry is normal. CT temporal bone shows bilateral stapes fixation with no ossicular erosion. What is the most likely diagnosis?

A 32-year-old woman presents with progressive bilateral conductive hearing loss over 2 years. Otoscopy shows a normal tympanic membrane. Weber test shows lateralization to the right ear, and Rinne test shows bone conduction better than air conduction bilaterally. Which investigation is most appropriate to confirm the diagnosis of otosclerosis?

A 28-year-old man with unilateral otosclerosis (left ear, air-bone gap 35 dB) undergoes successful left stapedectomy with ossicular reconstruction. Six weeks post-operatively, he reports sudden-onset severe vertigo, nausea, and nystagmus. Audiometry shows new sensorineural hearing loss (15 dB) in the operated ear. Otoscopy is normal. What is the most appropriate next step in management?

Regarding the pathophysiology and management of otosclerosis, all of the following statements are true EXCEPT:

A 32-year-old woman presents with progressive bilateral hearing loss over 2 years. Audiometry shows bone conduction better than air conduction (air-bone gap 30 dB). CT temporal bone reveals bilateral stapes footplate fixation with otosclerotic foci. Regarding otosclerosis, all of the following are true EXCEPT: