Auditory brainstem response and otoacoustic emission assessment of hearing-impaired children of mothers who contracted rubella during pregnancy
Conclusions Based on the auditory brainstem response (ABR) results obtained in this study, the incidence of deafness in children whose mothers had rubella during pregnancy is high (29.5%), and deafness is profound in most cases (80%). Vaccinating women of childbearing age against rubella is essentia...
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Veröffentlicht in: | Acta oto-laryngologica 2005-05, Vol.125 (5), p.492-494 |
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Zusammenfassung: | Conclusions
Based on the auditory brainstem response (ABR) results obtained in this study, the incidence of deafness in children whose mothers had rubella during pregnancy is high (29.5%), and deafness is profound in most cases (80%). Vaccinating women of childbearing age against rubella is essential to reduce the number of cases of childhood sensorineural hearing loss caused by gestational rubella.
Objective
It has been shown in the literature that, in Brazil, gestational rubella is responsible for 21% of cases of deafness in children. The purpose of this study was to assess the incidence of deafness in children whose mothers had rubella during pregnancy.
Material and methods
Between February and July 2001, we conducted a prospective study assessing hearing status in 17 children (mean age 6 months). The mothers had serologically (ELISA) confirmed gestational rubella. We recorded ABRs and analysed distortion product otoacoustic emissions (DPOAEs).
Results
In 5 children (29.5%), ABRs revealed sensorineural hearing loss, which was moderate to severe in 1 (20%) and profound in 4 (80%). The hearing loss was bilateral in 3 children (60%) and asymmetrical in 4 (80%). Regarding DPOAEs, 7 children (41%) presented no response, and this occurred bilaterally in 4 (57%). All children with abnormal ABRs also presented abnormal DPOAEs. Two children with normal ABRs presented abnormal DPOAEs. |
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ISSN: | 0963-7486 0001-6489 1465-3478 1651-2251 |
DOI: | 10.1080/00016480510036420 |