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Unexplained Variation in Benefit of Treatment of Congenital Unilateral Aural Atresia: A Review of the Literature

AUDIOLOGY AND NEURO-OTOLOGY(2021)

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摘要
Objective: A review of published data regarding binaural hearing after treatment of congenital unilateral conductive hearing loss (UCHL) due to aural atresia. Treatment options concern atresia surgery (reconstructive surgery), application of a bone conduction device (BCD), or application of a middle ear implant (MEI). Data Sources: Database PubMed was searched for articles published in English and German between January 1, 1994, and January 1, 2019. Study Selection: The initial search identified 52 studies, of which 9 met the inclusion criteria. Data Synthesis: Comparison of studies was based on a structured review. Meta-analysis was not feasible because of the heterogeneity of outcome measures, the limited number of relevant papers (9), and diverse types of treatment (5). Conclusions: Treatment of UCHL results in bilateral hearing instead of binaural hearing. The large intersubject variability in benefit of treatment is unexplained with a clear improvement in the minority of listeners and a limited improvement or binaural interference in most listeners after atresia repair or amplification with a BCD or MEI.
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关键词
Aural atresia,Binaural hearing,Conductive hearing loss,Congenital hearing loss,Treatment
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