title: The round window in acute hearing loss.
abstract: Sensorineural hearing loss has various etiologies. One of them is perilymphatic fistula, which is observed in (1) congenital malformation of the internal ear in children: (2) after operations on the oval window (stapedectomy, interposition); (3) in cases of head trauma, and (4) in acute hearing loss of unknown origin. The authors report 5 of 19 cases of acute hearing loss observed at the ORL Clinic in Kraków and operated on by exploratory tympanotomy. In 4 of them, rupture of the round window membrane (secondary tympanic membrane) was found. A hypothesis for the rupture mechanism is presented.
mesh_terms: D000293:Adolescent; D000328:Adult; D003051:Cochlea / Q000293:injuries*; D005260:Female; D003639:Hearing Loss, Sudden / Q000209:etiology*; D006801:Humans; D008297:Male; D005082:Physical Exertion; D012405:Round Window, Ear / Q000293:injuries* / Q000601:surgery; D012421:Rupture