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Selection strategies for binaural and monaural cochlear implantation
Ann E Perreau1, Richard S Tyler, Shelley Witt
1The University of Iowa, Department of Otolaryngology - Head & Neck Surgery, 200 Hawkins Drive, 21016 PFP, Iowa City, IA 52242, USA. ann-perreau@uiowa.edu
American Journal of Audiology
|December 7, 2007
Summary
New theoretical guidelines help select cochlear implants by assessing each ear's contribution to binaural hearing. This ensures optimal hearing outcomes for adults and children with hearing loss.
Area of Science:
- Audiology
- Otorhinolaryngology
- Biomedical Engineering
Background:
- Cochlear implants (CI) are crucial for hearing restoration.
- Optimizing binaural hearing is key for improved speech perception and sound localization.
- Current selection criteria may not fully leverage the benefits of bilateral hearing.
Purpose of the Study:
- To propose theoretical guidelines for cochlear implant (CI) selection in adults and children.
- To emphasize the contribution of each ear to the binaural advantage.
- To outline options for single-ear implantation, single-ear implantation with a contralateral hearing aid, and bilateral implantation.
Main Methods:
- Developed a method for selecting the best CI or hearing aid outcome based on usable hearing.
- Measured aided speech perception in each ear separately and bilaterally.
- Based guidelines on hearing aid performance, individual ear contributions, and binaural advantage.
Main Results:
- Guidelines consider the level of hearing aid performance versus expected CI outcomes.
- Evaluated the unique contribution of each ear to overall hearing.
- Assessed the presence and extent of binaural advantage.
Conclusions:
- General recommendation is to maximize the patient's opportunity for binaural hearing.
- The proposed guidelines are theoretically based.
- Further research is needed to validate these theoretical guidelines in clinical practice.
