<prompt> A 31 year old female patient complains of bilateral impairment of hearing for the 5 year. On examination, tympanic membrane is normal and audiogram shows a bilateral conductive deafness. Impedance audiometry shows As type of curve and acoustic reflexes are absent. All constitute pa of treatment, except:Hearing aidStapedectomySodium fluorideGentamicin  <response>: Gentamicin is used to treat Menieres disease. 