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Tympanometry for the Diagnosis of Ossicular Disruption

Tympanometry for the Diagnosis of Ossicular Disruption Abstract Discrepancy in type of tympanogram obtained in cases of ossicular discontinuity appears to be related to frequency of probe tone used in the impedance unit. This suspicion was investigated by obtaining three tympanograms on each of ten patients with disruption of the ossicular chain. Each of three tympanograms utilized a different probe frequency: 220, 625, and 800 Hz. Results show a clear undulating tympanographic pattern for every case when the 800-Hz probe tone was used, in the majority of cases for the 625-Hz tone, and in no case when the 220-Hz tone was employed. To obtain a tympanogram from a patient with ossicular discontinuity that can be easily distinguished from a version of a type A (normal tracing), we recommend using an electroacoustic impedance unit that employs an 800-Hz probe tone. References 1. Metz 0: The acoustic impedance measured on normal and pathological ears . Acta Otolaryngol (Suppl) 63:1-254, 1946. 2. Thomsen KA: Eustachian tube function tested by employment of impedance measuring . Acta Otolaryngol 45:252-267, 1955.Crossref 3. Terkildsen K, Thomsen KA: The influence of pressure variations on the impedance of the human ear drum . J Laryngol Otol 73:409-418, 1959.Crossref 4. Anderson H, Holmgren L, Hoist H-E: Experiments with an objective method of testing the middle ear function . Acta Otolaryngol 46:381-383, 1956.Crossref 5. van Dishoeck HAE: Theorie and praxis des pneumophons . Arch Ohren 146:5, 1939.Crossref 6. von Bekesy G: Zur theorie des hörens bei der schallaufnahme durch knochenleitung . Ann Physik 13:111, 1932. 7. Lidén G, Nordlund B: Preoperativ bedömning av operationsfall: Nordiska audiologiska sällskapets kurs i audiologi . Göteborg, Sweden, Fresk, 1962, pp 85-113. 8. Lidén G: The scope and application of current audiometric tests . J Laryngol Otol 83:507-520, 1969.Crossref 9. Lidén G: Test for stapes fixation . Arch Otolaryngol 89:215-219, 1969. 10. Lidén G, Peterson JL, Björkman G: Tympanometry . Arch Otolaryngol 92:248-257, 1970.Crossref 11. Peterson JL, Lidén G: Tympanometry in human temporal bones . Arch Otolaryngol 92:258-266, 1970.Crossref 12. Jerger J: Clinical experience with impedance audiometry . Arch Otolaryngol 92:311-324, 1970.Crossref 13. Peterson JL, Lidén G: Some static characteristics of the stapedial muscle reflex . Audiology 11:97-114, 1972.Crossref 14. Lidén G, Björkman G, Peterson JL: Clinical equipment for measurement of the middle ear reflexes and tympanometry . J Speech Hear Disord 37:100-112, 1972. 15. Anderson H, Barr B: Conductive recruitment . Acta Otolaryngol 62:171-184, 1966.Crossref 16. Møller AR: An experimental study of the acoustic impedance of the middle ear and its transmission properties . Acta Otolaryngol 60:129-149, 1965.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

Tympanometry for the Diagnosis of Ossicular Disruption

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References (18)

Publisher
American Medical Association
Copyright
Copyright © 1974 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1974.00780030027005
Publisher site
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Abstract

Abstract Discrepancy in type of tympanogram obtained in cases of ossicular discontinuity appears to be related to frequency of probe tone used in the impedance unit. This suspicion was investigated by obtaining three tympanograms on each of ten patients with disruption of the ossicular chain. Each of three tympanograms utilized a different probe frequency: 220, 625, and 800 Hz. Results show a clear undulating tympanographic pattern for every case when the 800-Hz probe tone was used, in the majority of cases for the 625-Hz tone, and in no case when the 220-Hz tone was employed. To obtain a tympanogram from a patient with ossicular discontinuity that can be easily distinguished from a version of a type A (normal tracing), we recommend using an electroacoustic impedance unit that employs an 800-Hz probe tone. References 1. Metz 0: The acoustic impedance measured on normal and pathological ears . Acta Otolaryngol (Suppl) 63:1-254, 1946. 2. Thomsen KA: Eustachian tube function tested by employment of impedance measuring . Acta Otolaryngol 45:252-267, 1955.Crossref 3. Terkildsen K, Thomsen KA: The influence of pressure variations on the impedance of the human ear drum . J Laryngol Otol 73:409-418, 1959.Crossref 4. Anderson H, Holmgren L, Hoist H-E: Experiments with an objective method of testing the middle ear function . Acta Otolaryngol 46:381-383, 1956.Crossref 5. van Dishoeck HAE: Theorie and praxis des pneumophons . Arch Ohren 146:5, 1939.Crossref 6. von Bekesy G: Zur theorie des hörens bei der schallaufnahme durch knochenleitung . Ann Physik 13:111, 1932. 7. Lidén G, Nordlund B: Preoperativ bedömning av operationsfall: Nordiska audiologiska sällskapets kurs i audiologi . Göteborg, Sweden, Fresk, 1962, pp 85-113. 8. Lidén G: The scope and application of current audiometric tests . J Laryngol Otol 83:507-520, 1969.Crossref 9. Lidén G: Test for stapes fixation . Arch Otolaryngol 89:215-219, 1969. 10. Lidén G, Peterson JL, Björkman G: Tympanometry . Arch Otolaryngol 92:248-257, 1970.Crossref 11. Peterson JL, Lidén G: Tympanometry in human temporal bones . Arch Otolaryngol 92:258-266, 1970.Crossref 12. Jerger J: Clinical experience with impedance audiometry . Arch Otolaryngol 92:311-324, 1970.Crossref 13. Peterson JL, Lidén G: Some static characteristics of the stapedial muscle reflex . Audiology 11:97-114, 1972.Crossref 14. Lidén G, Björkman G, Peterson JL: Clinical equipment for measurement of the middle ear reflexes and tympanometry . J Speech Hear Disord 37:100-112, 1972. 15. Anderson H, Barr B: Conductive recruitment . Acta Otolaryngol 62:171-184, 1966.Crossref 16. Møller AR: An experimental study of the acoustic impedance of the middle ear and its transmission properties . Acta Otolaryngol 60:129-149, 1965.Crossref

Journal

Archives of Otolaryngology – American Medical Association

Published: Jan 1, 1974

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