Bone-Conduction ABR Tests How accurate are bone-conduction ABR tests? What are the best procedures for performing bone-conduction ABR tests? Determination of air-conduction (AC) and bone-conduction (BC) pure-tone thresholds is a basic audiometric procedure. ABR threshold estimates, at least for AC signals, also have widespread acceptance as a diagnostic measure. Bone-conduction ABR (BC-ABR) tests, ... Clinical Focus: Consult
Clinical Focus: Consult  |   November 01, 1995
Bone-Conduction ABR Tests
 
Author Affiliations & Notes
  • Barbara Cone-Wesson, PhD
    LAC+USC Medical Center, Department of Otolaryngology, Head and Neck Surgery, 1200 N. State Street, P.O. Box 795, Los Angeles, CA 90033
Article Information
Hearing & Speech Perception / Hearing Disorders / Clinical Focus / Consult
Clinical Focus: Consult   |   November 01, 1995
Bone-Conduction ABR Tests
American Journal of Audiology, November 1995, Vol. 4, 14-19. doi:10.1044/1059-0889.0403.14
History: Received April 7, 1994 , Accepted December 9, 1994
 
American Journal of Audiology, November 1995, Vol. 4, 14-19. doi:10.1044/1059-0889.0403.14
History: Received April 7, 1994; Accepted December 9, 1994
How accurate are bone-conduction ABR tests? What are the best procedures for performing bone-conduction ABR tests?
Determination of air-conduction (AC) and bone-conduction (BC) pure-tone thresholds is a basic audiometric procedure. ABR threshold estimates, at least for AC signals, also have widespread acceptance as a diagnostic measure. Bone-conduction ABR (BC-ABR) tests, to determine the presence of and quantify conductive hearing impairment, are a logical extension of diagnostic ABR protocols. ASHA (1991) recommended BC-ABR tests for assessment of newborns, infants, and toddlers. BC-ABR tests were first reported in the 1970s with the inception of ABR as a clinical tool and have received considerable attention during the past 15 years, with a flurry of papers published on the topic since 1987. There is no consensus, yet, about what constitutes a sensitive and specific BC-ABR test protocol. This review summarizes procedures that yield valid, reproducible results, provides warning about technical pitfalls, and recommends incorporation of BC-ABR protocols for routine clinical use. The reference and suggested reading lists contain articles cited specifically in the text and several related articles of historic or technical interest for those who wish to pursue the topic.
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