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Otoacoustic emissions as a screening test of hearing loss in high-risk infants: northern Greece experience
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Veröffentlicht: | 22. April 2010 |
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Introduction: Otoacoustic emissions (OEM) have been established as the easiest method to conduct screening test in newborns.
Methods: OEMs are been used as a screening test in all neonatal who being born in 3 major Obstretic Clinics in the capital of Northern Greece, Thessaloniki. High risk are neonatal with very high blood cholerythrin,use of ototoxic medicines, very low birth weight ( 1500 gm),requiring intensive care in the nursery longer of 5 days, prematurity and translocation of the 35 del G connexin 26 gene. Hearing loss with craniofacial syndromes is of common occurrence. Known are : Alport, Von Recklinghausen, Waardenburg, Usher, Nager, Pendred, long QT, Pierre – Robin, Treacher – Collins, Klippel – Feil, trisomy 13–15, trisomy 18, trisomy 21.
Results: In the year 2007–2008 were conducted 89 transiently evoked otoacoustic emissions (TEOAEs) (178 ears) in high risk neonates . A percentage of 48.31% (43 neonates) failed in the examination at least unilaterally. In general population the statistical failure to response at least in one ear, is 22%. These newborns were re-examined after a period of 1 month and success response had 20 neonates. In the remaining children were conducted auditory brainstem responses (ABRs) in which succeeded 15 . In the remaining 8, 4 had some kind of craniofacial syndromes and 4 were extremely premature babies. These were re-examined with ABRs and finally the ultimate failure was 2 neonates, 2.25 %, in which were applied cochlear implant.
Conclusions: Otolaryngologist must show extreme caution in the examination, and don’t hesitate to re-exam the newborn if there is a slightest suspicion of failure in the testing. The probability that the doctor is wrong it’s significant higher than in the general population