title: [Usefulness of impedance audiometry in the objective evaluation of occupational hearing loss].
abstract: 243 workers occupationally exposed to noise have been examined by pure tone audiometry and impedance audiometry. Hearing disturbance have been diagnosed in 145 cases (62%). Impedance audiometry was performed in 74 subjects. In 47 cases (70%) hearing thresholds were found consistent in both methods whereas the other 21 cases (30%) showed different hearing thresholds. Thirteen individuals of that group exhibited hearing impairment in the cochlea. Hearing loss has been simulated in two cases. The Lüscher-Zawisłocki test revealed 1-1.5 dB in all cases. Objective verification of loudness recruitment phenomenon allowed to state cochlear hearing localization in 31 cases.
mesh_terms: D000158:Acoustic Impedance Tests / Q000379:methods; D000293:Adolescent; D000328:Adult; D001309:Auditory Threshold / Q000502:physiology; D005260:Female; D006317:Hearing Loss, Noise-Induced / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000175:diagnosis*
vernacular_title: Przydatność audiometrii impedancyjnej do obiektywizacji zawodowych uszkodzeń słuchu.