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Cochlear implantation in single-sided deafness for enhancement of sound localization and speech perception

Kamal, Sally M.; Robinson, Aaron D.; Diaz, Rodney C.

Current Opinion in Otolaryngology & Head & Neck Surgery: October 2012 - Volume 20 - Issue 5 - p 393–397
doi: 10.1097/MOO.0b013e328357a613
HEARING SCIENCE AND VESTIBULAR MEDICINE: Edited by Rodney C. Diaz and Mohamed A. Hamid

Purpose of review: To examine the current literature regarding application of cochlear implantation in patients with single-sided deafness for improvement in sound localization.

Recent findings: As familiarity of the technical and biological capabilities of cochlear implantation improves and criteria for use broaden, investigators have begun examining usage of cochlear implantation in patients with single-sided deafness as a viable solution in attempts to improve sound localization and speech perception. Although studies of such application are limited, from the available published literature, modest benefits have been described in both sound localization and speech perception. Patients consistently report improvement in quality of life after cochlear implantation for single-sided deafness.

Summary: Although single-sided deafness is not a currently approved indication for cochlear implantation, limited investigational studies to date have demonstrated patient improvement in both sound localization and speech perception.

Department of Otolaryngology – Head and Neck Surgery, University of California Davis Medical Center, Sacramento, California, USA

Correspondence to Rodney C. Diaz, MD, Department of Otolaryngology – Head and Neck Surgery, UC Davis Medical Center, 2521 Stockton Boulevard #7200, Sacramento, CA 95817, USA. Tel: +1 916 734 1051; e-mail: rcdiaz@ucdavis.edu

© 2012 Lippincott Williams & Wilkins, Inc.