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Year: 2016  Vol. 20   Num. 1  - Jan/Mar
DOI: 10.1055/s-0035-1559586
Systematic Review
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Cochlear Implantation and Single-sided Deafness: A Systematic Review of the Literature
Francisco Cabral Junior, Mariana Hausen Pinna, Ricardo Dourado Alves, Andrea Felice dos Santos Malerbi, Ricardo Ferreira Bento
Key words:
unilateral hearing loss - cochlear implantation - single-sided deafness - speech discrimination - sound localization - tinnitus

Introduction Current data show that binaural hearing is superior to unilateral hearing, specifically in the understanding of speech in noisy environments. Furthermore, unilateral hearing reduce onés ability to localize sound.

Objectives This study provides a systematic review of recent studies to evaluate the outcomes of cochlear implantation in patients with single-sided deafness (SSD) with regards to speech discrimination, sound localization and tinnitus suppression.

Data Synthesis We performed a search in the PubMed, Cochrane Library and Lilacs databases to assess studies related to cochlear implantation in patients with unilateral deafness. After critical appraisal, eleven studies were selected for data extraction and analysis of demographic, study design and outcome data.

Conclusion Although some studies have shown encouraging results on cochlear implantation and SSD, all fail to provide a high level of evidence. Larger studies are necessary to define the tangible benefits of cochlear implantation in patients with SSD.



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