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Int Arch Otorhinolaryngol 2016; 20(01): 069-075
DOI: 10.1055/s-0035-1559586
Systematic Review
Thieme Publicações Ltda Rio de Janeiro, Brazil

Cochlear Implantation and Single-sided Deafness: A Systematic Review of the Literature

Francisco Cabral Junior
1   Department of Otolaryngology, Universidade de São Paulo, São Paulo, SP, Brazil
,
Mariana Hausen Pinna
1   Department of Otolaryngology, Universidade de São Paulo, São Paulo, SP, Brazil
,
Ricardo Dourado Alves
1   Department of Otolaryngology, Universidade de São Paulo, São Paulo, SP, Brazil
,
Andrea Felice dos Santos Malerbi
1   Department of Otolaryngology, Universidade de São Paulo, São Paulo, SP, Brazil
,
Ricardo Ferreira Bento
1   Department of Otolaryngology, Universidade de São Paulo, São Paulo, SP, Brazil
› Author Affiliations
Further Information

Publication History

11 March 2015

02 June 2015

Publication Date:
29 July 2015 (online)

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Abstract

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.

Keywords

unilateral hearing loss - cochlear implantation - single-sided deafness - speech discrimination - sound localization - tinnitus
 

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