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Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process

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Cochlear implantation in incomplete partition type I.

Ali Eftekharian¹, Kourosh Eftekharian², Nooshin Mokari¹

¹Cochlear Implant Center, Loghman Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery

|July 1, 2019

Summary

Cochlear implantation in patients with incomplete partition type I is safe and effective, despite challenges like cerebrospinal fluid gusher. Auditory and speech outcomes are satisfactory, even with absent electrophysiological responses.

Keywords:

Cochlear implantation Gusher Incomplete partition Inner ear malformations

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Area of Science:

Otolaryngology
Neurosurgery
Audiology

Background:

Incomplete partition type I is a congenital inner ear malformation.
Cochlear implantation is a treatment option for hearing loss in these patients.
Limited data exists on cochlear implantation outcomes in this specific population.

Purpose of the Study:

To report outcomes of cochlear implantation in patients with incomplete partition type I.
To compare findings with existing literature.
To highlight challenges faced by cochlear implant teams.

Main Methods:

Retrospective review of 1089 cochlear implant procedures.
Inclusion of patients with incomplete partition type I.
Evaluation of auditory and speech performance at 3-year follow-up.

Main Results:

Eighteen cases (1.65%) of incomplete partition type I identified.
Cerebrospinal fluid gusher occurred in 83.3% of cases.
Satisfactory auditory and speech outcomes achieved in all patients, despite absent electrophysiological responses in 55.6%.

Conclusions:

Cochlear implantation is a safe and effective treatment for incomplete partition type I.
The procedure presents unique challenges, including a high incidence of cerebrospinal fluid gusher.
Careful surgical planning and management are crucial for successful outcomes.