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Our experience of the management of patients with enlarged vestibular aqueduct. A case series with literature review.

Objectives: To report our institutional experience of the management of patients with enlarged vestibular aqueduct and compare it to the literature. Methods: We carried out a retrospective review of patients’ records from 1993 to 2015. The age, sex, associated malformations, relevant past medical history, genetic screening results, possible surgical incident, implant model and duration of follow up were recorded. The outcome was assessed by the Categories of Auditory Performance Scores (CAP) and the ability to attend mainstream shool. Results: We had 11 patients (6 boys and 5 girls) with enlarged vestibular aqueduct (EVA) who underwent cochlear implant surgery in our center during the 22-year study period, out of a total of 827 implanted (1.3%). Mean age at surgery was 8.9 years ranging from 0.6 to 35 years. EVA was bilateral in 10 cases, isolated in 7 cases and associated to other malformations in 4. The mean follow up duration was 48.3 months (range 3-120). No postoperative complication was observed and all the patients could regain a serviceable hearing with normal CAP scores in the majority of cases, attending normal school and working normally. Conclusion: Enlarged vestibular aqueduct is frequently observed in the deaf population without identifiable cause. The hearing loss is usually progressive and may result in cochlear implantation which has proven its efficiency in rehabilitating EVA patients.

Jean Valentin Fokouo (POC,Primary Presenter), Ministry of Health, valentin.fokouo@gmail.com;
I am a Cameroonian born Otolaryngologist.

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