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Effects of EAS cochlear implantation surgery on vestibular function
Keita Tsukada1, Hideaki Moteki, Hisakuni Fukuoka
1Department of Otolaryngology.
Acta Oto-Laryngologica
|September 7, 2013
Summary
Electric acoustic stimulation (EAS) cochlear implantation preserved vestibular function. Atraumatic surgery using the round window approach and soft electrodes is recommended to minimize risks and maintain balance function.
Area of Science:
- Otolaryngology
- Neuroscience
- Audiology
Background:
- Electric acoustic stimulation (EAS) combines acoustic and electric hearing.
- Vestibular function is crucial for balance and spatial orientation.
- Assessing vestibular function post-EAS is important for patient outcomes.
Purpose of the Study:
- To evaluate vestibular function before and after EAS cochlear implantation.
- To identify changes in vestibular function associated with EAS procedures.
Main Methods:
- Caloric testing and vestibular evoked myogenic potential (VEMP) were used.
- Vestibular function was assessed in 11 patients pre-implantation and 13 patients post-implantation.
Main Results:
- Most patients (73%) exhibited good preoperative vestibular function.
- Postoperative VEMP showed decreased response in one patient (9%).
- Caloric testing results remained unchanged in all patients post-implantation.
Conclusions:
- EAS cochlear implantation generally preserves vestibular function.
- Atraumatic surgical techniques, including the round window approach and soft electrodes, are preferred.
- These techniques help minimize the risk of impairing vestibular function in EAS patients.
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