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Original

Screening Tympanometry: Criteria for Medical Referral

Original Papers

&
Pages 197-208 | Received 25 Jul 1986, Accepted 03 Nov 1986, Published online: 03 Feb 2011
 

Abstract

Tympanograms were obtained from normal preschool and adult subjects with a prototype hand-held tympanometer to obtain normative values for four tympanometric variables: static admittance, equivalent ear canal volume, tympanometric peak pressure, and gradient. Effects of age group, sex, and pump speed (200 or 400 daPa/s) were determined. The results were incorporated into a four-part screening protocol (history, visual inspection, audiometry, and tympanometry) designed to reduce the excessive error rates associated with screening strategies that rely exclusively on tympanometry.

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