Pediatric Audiology Essay

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Pediatric Audiology Practical Laboratory Report Introduction Behavioral hearing tests require the child to show an overt response to an auditory stimulus. The response may be a head turn or a play such as a peg in a board. The aim of pediatric behavioral testing is to determine, as accurately and reliable as possible, the presence and nature of any hearing impairment and the threshold of hearing across the speech frequency range, from 500- 4000Hz. The choice of techniques is based on the developmental age, not necessarily the chronological age of the age. Behavioral testing should be accompanied by tympanometry, to investigate the status of the middle ear. Testing can be divided into two separate but overlapping areas of auditory detection and auditory discrimination. Discrimination techniques cannot be incorporated into the assessment until the child is 18-24 months developmentally. Developmental age ( months) Detection Discrimination 0-6 Observation Audiometry 6-18 Distraction Test VRA 18-30 DistractionVRA Cooperative test 30-60 VRAPerformance PTA Toy Discrimination test Distraction Test By 6-7 months most babies are sufficiently mature to sit unsupported and are able to turn to locate quiet sounds presented out of vision and level with the ear, provided they are not engrossed in other activities. This is a sensitive and reliable test for detecting hearing loss in this age group, if administered by skilled, well trained testers. Test Environment The test should be carried out in a sound treated room or audiometric booth which is large enough to accommodate parent(s), child and 2 testers comfortably. The room should be suitably furnished and free from unnecessary visual distractions. The background noise should be as low as possible and ideally meet the
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