Elevation of bone conduction threshold in children with middle ear effusion.
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.
Kobayashi
K
K
Department of Otolaryngology, Sapporo Medical College, Japan.
Kodama
H
H
Takezawa
H
H
Suzuki
T
T
Kataura
A
A
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