Related Experiment Videos
Criteria for selecting the side for cochlear implantation
O Deguine1, S Garcia de Quevedo, B Fraysse
1Service of Otology and Otoneurology, Centre Hospitalier Universitaire Purpan, Toulouse, France.
The Annals of Otology, Rhinology & Laryngology. Supplement
|September 1, 1995
Summary
Choosing the side for cochlear implantation involves peripheral and central factors. Peripheral factors like ossification and deafness duration are significant, while cerebral dominance showed no impact on speech outcomes.
Area of Science:
- Otolaryngology
- Neurosurgery
- Audiology
Background:
- Cochlear implantation side selection requires considering both peripheral and central factors.
- Peripheral factors include cochlear ossification and duration of deafness.
- Central factors relate to cerebral dominance, indirectly assessed via handedness.
Purpose of the Study:
- To investigate the influence of peripheral and central factors on cochlear implantation outcomes.
- To determine optimal side selection criteria for cochlear implantation.
Main Methods:
- Analysis of 111 patients who received Nucleus cochlear implants.
- Evaluation of peripheral factors: cochlear ossification, duration of deafness, and promontory test dynamic range.
- Assessment of central factors: cerebral dominance determined by handedness laterality via questionnaire.
Main Results:
- Cochlear ossification, duration of deafness, and promontory test range significantly impacted outcomes.
- Cause of deafness and residual hearing did not correlate with speech discrimination.
- No significant difference in outcomes between implantation on dominant versus non-dominant sides.
Conclusions:
- Implant the better ear if peripheral factors differ and no significant hearing exists in that ear.
- If peripheral factors are similar, choose the side of handedness for practical device manipulation.
- Peripheral factors are key considerations, while cerebral dominance plays a minor role in side selection for cochlear implants.