<prompt> A 31-year-old female patient complains of BL impairment of hearing for the past 5 years. Audio- gram shows a BL conductive deafness. Impedance audiometry is given below. All constitute part of treatment except:Hearing aidStapedectomySodium fluorideGentamicin  <response>: d GentamicinRef. Cummings, 6th ed., 2213The given tympanogram shows As type of curve and as per the description the diagnosis is clearly otosclerosis.Gentamicin is a vestibulotoxic drug given in Menieres to relieve vertigo. It has no role in otosclerosis. 