PEDIATRICS Vol. 55 No. 5 May 1975, pp. 666-672
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The Application of Acoustic Impedance Measurements to Pediatric Clinical Practice

Mary A. Ehrlich M.S.1 and Charles A. Tait Ph.D.1

1 Department of Physical Medicine and Rehabilitation, and the Institute for the Study of Mental Retardation and Related Disabilities, University of Michigan, Ann Arbor

This article provides background information on acoustic impedance testing and illustrates utilization of test results in pediatric clinical practice. Acoustic impedance measurement devices are presently being used successfully by hearing screening programs and by otorhinolaryngologists in clinical and hospital settings. As a diagnostic tool, the acoustic impedance bridge can have particular applicability in dealing with young children and other difficut-to-test populations. Impedance measurements can provide physicians with objective information about the condition of the middle ear, oftentimes more accurately than either otoscopic examination or standard audiometry. The technique described can assist physicians in diagnosing middleear diseases and in monitoring the effects of otological treatment.

Submitted on April 23, 1974
Accepted on September 26, 1974