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CD444- Notes 5

by: Leah Larabee

CD444- Notes 5 CD 444

Leah Larabee
GPA 3.7
Aural Rehabilitation
Dr. Brooks

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About this Document

Aural Rehabilitation
Dr. Brooks
Class Notes
25 ?




Popular in Aural Rehabilitation

Popular in Language

This 2 page Class Notes was uploaded by Leah Larabee on Friday March 6, 2015. The Class Notes belongs to CD 444 at University of Alabama - Tuscaloosa taught by Dr. Brooks in Spring2015. Since its upload, it has received 100 views. For similar materials see Aural Rehabilitation in Language at University of Alabama - Tuscaloosa.


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Date Created: 03/06/15
Early Attempts at Hearing Loss Identification 1990s average age of ID for hearing loss was 3 years old Benefits of screening screen to provide early intervention APGAR scores 0 Taken at 1 5 and 10 minutes after birth 0 Assess respiratory effect muscle tone heart rate color re ex irritability o A score of 110 is given Startle Re exes o Contraction of muscles around eyes in response to loud sound 0 Problems agreement among technicians that they can miss mild to moderate losses Identifying Hearing Loss in Newborns 2007 approximately 915 of all newborns screened for hearing loss at birth Goal of Healthy People 2010 to increase number of infants screened Approximately 12000 children each year have hearing loss as newborn Up to 3 per 1000 births each year have hearing loss Prior to Universal Newborn Hearing Screening UNHS 0 Average age 30 months 0 Severe to profound hearing losses were identified earlier than 30 months of age 0 Mild to moderate hearing loss not identified until school age in many cases Impact if you don39t have normal hearing it will affect your ability to develop speech and language Universal Newborn Hearing Screening UNHS Objective test 0toacoustic emissions OAEs used to accomplish UNHS 0 Portable devices used by nurses and technicians and supervised by audiologist 0 Issues to consider I May miss some mild to moderate losses Good at detecting conductive and cochlear hearing losses moderate to profound I Easier than ABR testing less time intensive I Less expensive Auditory brainstem response ABR 0 Portable devices used by nurses and technicians and supervised by audiologist 0 Issues to consider I More expensive I Will catch conductive cochlear and some neural losses may still miss mild losses 0 Typical procedure 0 Screen using OAEs and then do ABR if baby fails o 2007 Position Statement I Babies in NICU more than 5 days must be screened by ABR because ABR is a little more sensitive test and these children could be at higher risk for developing hearing loss Issues impacting UNHS 0 Short hospital stay and technician did not get to them 0 Child failed screening but family failed to followup 0 False positives important to keep low Early Hearing Detection and Intervention EHDI programs UNHS is not just screening must follow up 1 Screening by 1 month 2 Identification by 3 months 3 Intervention by 6 months Testing a Baby s Hearing Otoacoustic Emissions 0 Screening otoacoustic emissions only tell you pass or fail 0 Evaluation Diagnostic OAEs tell you more frequency specific information Auditory Brainstem Response ABR 0 Threshold ABR testing look for lowest stimulus level at which wave V is detectable 0 Use shortduration tone pips can get frequency specific information 0 Tympanometry amp Acoustic Re exes 0 Use a different frequency probe tone than used with adults 0 Adults 226 Hz 0 Infants lt 6 months 1000 Hz Also monitor behavioral responses to sound Why do both OAE and ABR o Auditory neuropathydyssynchrony auditory nerve is present but may not be functioning or may not be processing signals 0 Will get absent ABR but present OAEs 0 Need both to diagnose WATCHED THE SOUND AND FURY


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