Stapedial Reflex and Ears With High Static Acoustic Admittance

Ohio University, Athens Dennis T. Ries University of North Texas, Denton Contact author: Jeffrey J. DiGiovanni, School of Hearing, Speech, and Language Sciences, W222 Grover Center, Ohio University, Athens, OH 45701. E-mail: digiovan{at}ohio.edu . Purpose: To evaluate modified acoustic reflex diagno...

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Bibliographic Details
Published in:American journal of audiology 2007-06, Vol.16 (1), p.68-74
Main Authors: DiGiovanni, Jeffrey J, Ries, Dennis T
Format: Article
Language:English
Subjects:
Acoustic reflex
Adult
Aged
Anatomy
Audiometric Tests
Audiometry
Audiometry, Speech
Changes
Control Groups
Ear - physiology
Ears & hearing
Efficiency
Evaluation
Experimental Groups
Female
Frequencies
Humans
Male
Measurement
Middle Aged
Nervous system
Reflex - physiology
Speech Acoustics
Speech Perception
Stapedius - physiology
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Summary:Ohio University, Athens Dennis T. Ries University of North Texas, Denton Contact author: Jeffrey J. DiGiovanni, School of Hearing, Speech, and Language Sciences, W222 Grover Center, Ohio University, Athens, OH 45701. E-mail: digiovan{at}ohio.edu . Purpose: To evaluate modified acoustic reflex diagnostic protocols for a group of individuals ( n = 9) with high peak compensated static acoustic admittance (Y tm ) tympanograms. Method: A modified procedure designed to improve acoustic stapedius reflex threshold (ASRT) measurements in individuals with high-admittance tympanograms was employed in both an experimental and a control group. ASRTs were measured at 0.5, 1.0, and 2.0 kHz, ipsilateral and contralateral. Measurements were obtained within each condition for 7 ear canal pressures that were set to 0, ±50, ±100, and ±150 daPa (relative to tympanometric peak pressure [TPP]). Results: Though measuring ASRTs at –50 daPa (relative to TPP) in the high-admittance and normal groups did not result in significantly better thresholds than at TPP, the absent reflex rate was reduced when the ear canal pressure was changed by –50 daPa during ASRT measurements. Conclusions: Based on this sample, it is suggested that a patient presenting with high peak compensated static acoustic admittance (peak Y tm 2.1 mmho) undergo ASRT evaluation with the ear canal pressure set to –50 daPa (relative to TPP). Key Words: acoustic reflex, immittance, stapedial reflex, high admittance CiteULike     Connotea     Del.icio.us     Digg     Facebook     Reddit     Technorati     Twitter     What's this?
ISSN:1059-0889
1558-9137
DOI:10.1044/1059-0889(2007/006)