Middle ear and inner ear effects on clinical bone-conduction threshold.
The measurement of bone-conduction thresholds is an integral part of audiologic evaluation. The relationship between bone-conduction and air-conduction thresholds is the differentiating diagnostic indicator between conductive and sensorineural hearing loss. At the same time, the influence of middle ear and inner ear structures upon the bone-conduction response has been well documented. We present two cases illustrating this influence and attempt to explain the clinical bone-conduction thresholds with operative findings.
Orchik
D J
DJ
Shea Clinic, Memphis, TN 38119, USA.
Schumaier
D R
DR
Shea
J J
JJ
Ge
X
X
D000158:Acoustic Impedance Tests; D000328:Adult; D001299:Audiometry; D001300:Audiometry, Evoked Response; D001844:Bone Conduction; D007758:Ear, Inner / Q000473:pathology*; D004432:Ear, Middle / Q000473:pathology* / Q000601:surgery; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000534:rehabilitation; D006801:Humans; D009998:Ossicular Prosthesis; D010040:Otosclerosis / Q000473:pathology* / Q000601:surgery; D013198:Stapedius / Q000473:pathology / Q000601:surgery; D013201:Stapes Surgery