Guidelines_Middle_Ear_dis_1

Guidelines_Middle_Ear_dis_1 - Guidelines for Screening for...

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Guidelines for Screening for Hearing Impairment and Middle-Ear Disorders Working Group on Acoustic Immittance Measurements and the Committee on Audiologic Evaluation American Speech-Language-Hearing Association The Guidelines for Screening for Hearing Impairments and Middle Ear Disorders were developed by the American Speech-Language-Hearing Association (ASHA) Working Group on Acoustic Immittance Measurements and the Committee on Audiologic Evaluation and adopted by the ASHA Legislative Council (LC 22-89) in November 1989. The Working Group members were Robert H. Margolis, chair; Michael G. Block; Steven M. Parries, Ross J. Roeser; Janet E. Shanks; and Richard H. Wilson. The Committee on Audiologic Evaluation members included Sandra Gordon-Salant, chair; Evelyn Cherow, current ex officio; John D. Durrant Thomas E. Fowlkes; Thomas A Frank; Gregg D. Givens; Michael P. Gorga; Carol Kamara, past ex officio; Sharon A Lesner; and Laura Ann Wilber. The monitoring vice presidents were Gilbert R. Herer, past president, and Teris K. Schery, current vice president for clinical affairs. Introduction In 1979, "Guidelines for Acoustic Immittance Screening of Middle-Ear Function" were published in Asha. Those guidelines, drafted by the Subcommittee on Impedance Measurement of the Committee on Audiologic Evaluation and approved by Legislative Council in November 1978, presented a procedure for determining pass-fail criteria that could be used to decide upon the need for retest or medical referral of Individuals at risk for middle ear disorders. Recognizing the need for additional normative and clinical data, the subcommittee noted that the guidelines "should be considered as interim and subject to revision." The reconstituted subcommittee, now the ASHA Committee on Audiologic Evaluation - Working Group on Acoustic lmmittance Measurements, has revised the guidelines with consideration for the following recent developments. An American standard on aural acoustic immittance instruments has been completed (American National Standards Institute, 1987). This standard has already begun to influence the way aural acoustic immittance measurements are made. Technological advances have improved the instrumentation. Many new instruments provide faster recording speeds, automatically compensate for ear-canal volume, and perform automatic calculations of tympanometric variables that are used as diagnostic indicators. New information on the natural course of otitis media provides important insight into the nature of the conditions that a screening protocol should detect. Clinical data on screening techniques, including the 1979 ASHA guidelines, are now available and shed new light on the outcomes of such screening strategies. In 1985, a revised set of "Guidelines for Identification Audiometry" outlined a
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Guidelines_Middle_Ear_dis_1 - Guidelines for Screening for...

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