title: Elevation of bone conduction threshold in children with middle ear effusion.
abstract: A retrospective study of children having otitis media with effusion revealed fluctuations in bone conduction thresholds as well as in air conduction thresholds. Previous investigations in this area presented both low- and high-tone bone conduction hearing loss which were reversible. We conducted a detailed study including complete otologic, audiologic and tympanometric evaluation of 27 (41 ears) children who had fluctuating bone conduction hearing loss. From these audiologic examinations, 3 types of bone conduction hearing loss could be classified: high-tone, low-tone and flat-type bone conduction hearing loss. We observed the shift of bone conduction thresholds in children after removal of middle-ear fluids by the appropriate medical management.
authors.affiliation: Department of Otolaryngology, Sapporo Medical College, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kobayashi
authors.forename: H
authors.initials: H
authors.lastname: Kodama
authors.forename: H
authors.initials: H
authors.lastname: Takezawa
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: A
authors.initials: A
authors.lastname: Kataura
mesh_terms: D001299:Audiometry; D001844:Bone Conduction; D002648:Child; D034381:Hearing Loss / Q000209:etiology*; D006314:Hearing Loss, Conductive / Q000145:classification / Q000209:etiology*; D006801:Humans; D010034:Otitis Media with Effusion / Q000150:complications* / Q000503:physiopathology; D012189:Retrospective Studies; D012684:Sensory Thresholds