Lecture 5 Slides (Guest Speaker- Jon Douglas)

Lecture 5 Slides (Guest Speaker- Jon Douglas) - Learning...

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Unformatted text preview: September 19, 2011 Learning Objectives Introduction to Pediatric Audiology Students will be able to: Identify reasons why we use hearing Recall different tests pediatric audiologists perform List major causes of hearing loss in children Identify types of hearing loss Describe why detecting hearing loss early is important Jon C. Douglas, Au.D., CCC-A [email protected] 318318-3493 Scope of Practice Assessment Why do we use our hearing? (Re)habilitation Education Behavioral testing Physiologic auditory test Tympanometry and acoustic reflex testing Otoacoustic emissions Auditory brainstem evoked response testing Newborn Hearing Screening Auditory processing disorder Vestibular Testing Hearing aids & cochlear implants Management plan Statistics Hearing Loss in Children 3 per 1,000 newborns with a 1.8 million children with hearing 11 3-14 9% of school aged children 11.3 14.9% 11.33 problems have some degree of hearing loss that affects learning 75% of children experience an ear infection (otitis media) before age 3 (otitis congenital hearing loss "Hearing loss affects approximately 17 in 1,000 children under age 18. Incidence increases with age: Approximately 314 in 1 000 1,000 people over age 65 have hearing loss and 40 to 50 percent of people 75 and older have a hearing loss." http://www.nidcd.nih.gov/health/statistics/hearing.asp 1 September 19, 2011 Statistics "Approximately 59,000 people Early Hearing Detection and Intervention (EHDI) Universal Newborn Hearing Screening (UNHS): Hearing screening by 1 month Infants who do not pass the hearing screening: Diagnostic test by 3 months All infants with confirmed permanent hearing loss: Early intervention by 6 months worldwide have received cochlear implants. About 250,000 people would be good ca d dates o candidates for a cochlear coc ea implant. In the United States, about 13,000 adults and nearly 10,000 children have cochlear implants." http://www.nidcd.nih.gov/health/statistics/hearing.asp Earlier vs. Later Identification of Hearing Loss 6 129 deaf and hard-of-hearing children assessed 2x each year. Types of Hearing Loss Language Age (yrs) 5 4 3 2 1 0 Identified <6 mos (n = 25) Identified >6 mos (n = 104) Conductive Sensorineural Mixed 0.8 1.2 1.8 2.2 Age (yrs) 2.8 3.2 3.8 4.2 4.8 Moeller, M.P. (1997). Boys Town National Research Hospital Study. [email protected] Conductive Hearing Loss Ear infections/fluid (otitis media) Damage to the ear drum (tympanic Damage to the three bones g Faulty development of the ear (ossicles) ossicles) membrane) (Organ of Hearing) 2 September 19, 2011 Sensorineural Hearing Loss Faulty development of the ear Damage due to infections Meningitis Drugs that affect the ear (mycin) (mycin) Prematurity Head injuries Family history of hearing loss (Organ of Hearing) Mixed Hearing Loss Etiology of Hearing Loss Combination of a conductive & sensorineural hearing loss Audiological Assessment Hearing Evaluations with Children Includes History Otoscopic examination Observation of child/informal Formal audiometric testing interaction Auditory Brainstem Response Otoacoustic Emissions (OAE) Visual Reinforcement Conditioned Play Audiometry (CPA) Audiometry (VRA) (ABR) 3 September 19, 2011 ABR Measures auditory neural activity in response to sounds OAE Measures responses in the inner ear VRA CPA Used for children 5 months to 3 years cognitive age Teach the child to turn their head when they hear a sound. If the child does this correctly, they are reinforced with a toy Used for children 30 months or older (typically up to to 5 years) cognitive age Teach the child to perform a motor task when they hear a sound Hearing Technology Communication Options Hearing Aids FM Systems Cochlear Implants Auditory/Verbal communication Auditory Oral communication Cued Speech Manually Coded English American Sign Language 4 ...
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