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Pediatric ENT - part 8

Hình 37,5 Visual tăng cường audiometry (VRA). Trong ví dụ này, âm thanh lĩnh vực kiểm thử được diễn ra và micro chèn không được sử dụng, đối tượng tăng cường là một món đồ chơi mềm mại, chiếu sáng trong một hộp kính-fronted (nhìn thấy phía sau đầu € ™ s testerâ) | 344 John Graham Milanka Drenovak William Hellier Fig. 37.5 Visual reinforcement audiometry VRA . In this example sound-field testingis tailing place aiu linmrl microphones are not bemg ureel eliereinforrine object it ar oft toy hluminated in a glass-frontedtee irfe n behind thr tester s I lead i sorineural hearing loss when hearing may have been normal at birth. Detecit coneemtal daafriets misaadaa nernatgl scrasn-ing or rn chiforen who did not have neonatal screening. Visual Reinforcement Audiometry Age Six Months to Three Years y 1 t fi s .y a. y y. Ty VRA is a more reliable variant of distraction testing. It requires more complex and expensive equipment but is more ccouerieihao aiiltaslionlarlnie. As in thr ihelrac-tion tart eheehil arts Oh iliclsnsertd-de parenahdihe first tester adtraels shr ahiif s bttentfon from thu front. Ihr sound ttimuh however are orcscnte tròng an audtomse ter and tahveoad eilher from fondtprataat fioti tiono si on either tide f e lgc chfid or by he-dphe-ies fe insesi ses-phoner1 sitting cnmnfrrrbln dats oa in the ahhd a EAC allowing rhe fro earr lo fe teelctl scparaiek . Maskmg of the contielatrra ear esn bs pcriormad ttnaccrsary At bone sfoaotor err also be used to cslahlirh BC titsrrholds. The sesend tetiersttr behind thefiert inter eblf tss 6 childs foer. ltu1 oo1 as i sh oetide iPì 0 if pe tir leb rhmei a one-wry nweor in commumeation wfth rhrfitst te rtee with a rrdio mrnroelloee an dais o abte tohnar taundt relayed fromrhs test roonr Reinforsempnt of potilkte respinset paoitaer rlia e.iik with a cowdnT .m thefoam 0 a visual display Fig. 37.5 . This may lata thofoom d. an filummated maarng toy m a plash-fronted taa drtinated thetneond testes or alt ternativety Os an animated imogs on eietesárion scneei1 such st meey ahiMren adenow aocuctnmed to saeinịịm daily Ufa. rids rciriforecmmt brings snefomenl op eondto tioningtoa maildybahav1r iralprooodpre mainiains ilia child s mterrst for longed an-0- bean le ued in gr dticr more .