Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You and Your Team.

Learn More →

Relative Impedance Measurements in Young Children

Relative Impedance Measurements in Young Children Abstract RELATIVE impedance measurements in adults have shown that contractions of the stapedius muscles result in changes in middle ear impedance and that the contractions occur as bilateral reflexes to relatively intense acoustic stimulation (70 to 90 db sensation level).1,2 Jepsen,1 testing both ears of 91 normal subjects, detected stapedius reflex contractions in all but one of the ears tested. Clinical application has shown that this technique can be used in differentially diagnosing conductive hearing losses,3 sensorineural losses with recruitment,1,2,4,5 and, in certain instances, pseudohypacusis.1,2,6 At present, a lack of information regarding relative impedance measurements in children limits the effective clinical use of this technique with this population. We have been able to locate reports of only two studies in which children participated, the ages reported being seven7 and 10 years.1 This study was undertaken to obtain information regarding the use of relative impedance References 1. Jepsen, O.: Middle-Ear Muscle Reflexes in Man , in Jerger, J. (ed.): Modern Developments in Audiology , New York: Academic Press, Inc., 1963. 2. Metz, O.: The Acoustic Impedance Measured on Normal and Pathological Ears , Acta Otolaryng , (supp 63) , p 254, 1946. 3. Klockhoff, I.: Middle Ear Reflexes in Man: A Clinical and Experimental Study With Special Reference to Diagnostic Problems in Hearing Impairment , Acta Otolaryng , (supp 164) , pp 1-91, 1961. 4. Ewertsen, H.W., et al: Comparative Recruitment Testing , Acta Otolaryng , (supp 140) , pp 116-122, 1958. 5. Thomsen, K.A.: The Metz Recruitment Test , Acta Otolaryng 45:544-552 ( (Jan) -Dec) 1955.Crossref 6. Lamb, L.E., and Peterson, J.L.: Middle Ear Reflex Measurements in Pseudochypacusis: A Report of Two Cases , J Speech Hearing Dis 32:46-51 ( (Feb) ) 1967. 7. Terkildsen, K., and Nielsen, S.S.: An Electroacoustic Impedance Measuring Bridge for Clinical Use , Arch Otolaryng 69:339-346 ( (Sept) ) 1960.Crossref 8. Hardy, W., and Pauls, M.D.: Significance of Problems of Conditioning in GSR Audiometry , J Speech Hearing Dis 24:123-126 ( (May) ) 1959. 9. Eagles, E.L., et al: Hearing Sensitivity and Related Factors in Children , Pittsburg: University of Pittsburg Graduate School of Public Health, 1963. 10. Schlosser, W.D.: A Clinical Investigation of the Surgical Treatment of Congenital Mixed Deafness , Laryngoscope 74:1-21 ( (Jan) ) 1964.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

Relative Impedance Measurements in Young Children

Loading next page...
 
/lp/american-medical-association/relative-impedance-measurements-in-young-children-RsvU0cTi1c
Publisher
American Medical Association
Copyright
Copyright © 1968 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1968.00770010164009
Publisher site
See Article on Publisher Site

Abstract

Abstract RELATIVE impedance measurements in adults have shown that contractions of the stapedius muscles result in changes in middle ear impedance and that the contractions occur as bilateral reflexes to relatively intense acoustic stimulation (70 to 90 db sensation level).1,2 Jepsen,1 testing both ears of 91 normal subjects, detected stapedius reflex contractions in all but one of the ears tested. Clinical application has shown that this technique can be used in differentially diagnosing conductive hearing losses,3 sensorineural losses with recruitment,1,2,4,5 and, in certain instances, pseudohypacusis.1,2,6 At present, a lack of information regarding relative impedance measurements in children limits the effective clinical use of this technique with this population. We have been able to locate reports of only two studies in which children participated, the ages reported being seven7 and 10 years.1 This study was undertaken to obtain information regarding the use of relative impedance References 1. Jepsen, O.: Middle-Ear Muscle Reflexes in Man , in Jerger, J. (ed.): Modern Developments in Audiology , New York: Academic Press, Inc., 1963. 2. Metz, O.: The Acoustic Impedance Measured on Normal and Pathological Ears , Acta Otolaryng , (supp 63) , p 254, 1946. 3. Klockhoff, I.: Middle Ear Reflexes in Man: A Clinical and Experimental Study With Special Reference to Diagnostic Problems in Hearing Impairment , Acta Otolaryng , (supp 164) , pp 1-91, 1961. 4. Ewertsen, H.W., et al: Comparative Recruitment Testing , Acta Otolaryng , (supp 140) , pp 116-122, 1958. 5. Thomsen, K.A.: The Metz Recruitment Test , Acta Otolaryng 45:544-552 ( (Jan) -Dec) 1955.Crossref 6. Lamb, L.E., and Peterson, J.L.: Middle Ear Reflex Measurements in Pseudochypacusis: A Report of Two Cases , J Speech Hearing Dis 32:46-51 ( (Feb) ) 1967. 7. Terkildsen, K., and Nielsen, S.S.: An Electroacoustic Impedance Measuring Bridge for Clinical Use , Arch Otolaryng 69:339-346 ( (Sept) ) 1960.Crossref 8. Hardy, W., and Pauls, M.D.: Significance of Problems of Conditioning in GSR Audiometry , J Speech Hearing Dis 24:123-126 ( (May) ) 1959. 9. Eagles, E.L., et al: Hearing Sensitivity and Related Factors in Children , Pittsburg: University of Pittsburg Graduate School of Public Health, 1963. 10. Schlosser, W.D.: A Clinical Investigation of the Surgical Treatment of Congenital Mixed Deafness , Laryngoscope 74:1-21 ( (Jan) ) 1964.Crossref

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Aug 1, 1968

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$499/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month