Study on the cochlear implantation efficacy in adults with enlarged vestibular aqueduct syndrome

doi:10.13418/j.issn.1001-165x.2025.5.17

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Chinese Journal of Clinical Anatomy ›› 2025, Vol. 43 ›› Issue (5) : 606-611. DOI: 10.13418/j.issn.1001-165x.2025.5.17

Study on the cochlear implantation efficacy in adults with enlarged vestibular aqueduct syndrome

Hu Yunlong, Chen Qi, Chen Shiqin, Zhang Wenjin, Wang Gang

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Abstract

Objective To assess the efficacy of cochlear implantation (CI) in adult patients with enlarged vestibular aqueduct syndrome (LVAS). Methods A retrospective analysis was conducted on clinical data from 32 patients who underwent cochlear implant surgery between January 2019 and December 2021. Patients were categorized into the LVAS group (16 cases) and the control group (16 cases) based on the presence of LVAS. Audiometric testing, speech recognition rate assessment, category of auditory performance-II (CAP-II), speech intelligibility rating (SIR), self-confidence, and satisfaction scores were compared between the two groups before surgery and at 12 and 18 months post-cochlear implantation. The relationship between the auditory-oral conditions of the two groups and the timing of cochlear implantation were evaluated. Results Successful electrode implantation was achieved in both groups, and no postoperative complications such as facial paralysis, infection, or electrode displacement were observed. At 12 months postoperatively, there were no significant differences between the postlingual deaf patients of LVAS group and the control group in aided audiometric thresholds (P=0.554), speech recognition rates (P=0.425), CAP-II scores (P=0.288), SIR scores (P=0.105), self-confidence scores (P=0.301), and satisfaction scores (P=0.618) (P>0.05). Similarly, at 18 months postoperatively, there were no significant differences in the mentioned parameters between the two groups (P>0.05) in aided audiometric thresholds (P=0.682), speech recognition rates (P=0.501), CAP-II scores (P=0.555), SIR scores (P=0.192), self-confidence scores (P=0.631), and satisfaction scores (P=0.618). CAP-II scores and satisfaction scores in both groups were negatively correlated with the duration of deafness at one year postoperatively (P<0.05). The CAP-II scores of LVAS group showed a positive correlation with the age of onset of hearing loss (P<0.05), while there was no significant correlation with the age of implantation and hearing aid wearing time in either group (P>0.05). Conclusions Cochlear implantation in adult patients with severe or profound LVAS can yield auditory-oral rehabilitation outcomes comparable to those of adult patients with normal inner ear development. Cochlear implantation serves as a primary means for auditory rehabilitation in adult LVAS patients with severe or profound sensorineural hearing loss.

Key words

Large vestibular aqueduct syndrome / / / Cochlear implantation / / / Auditory rehabilitation / / / / Adults

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Hu Yunlong, Chen Qi, Chen Shiqin, Zhang Wenjin, Wang Gang. Study on the cochlear implantation efficacy in adults with enlarged vestibular aqueduct syndrome[J]. Chinese Journal of Clinical Anatomy. 2025, 43(5): 606-611 https://doi.org/10.13418/j.issn.1001-165x.2025.5.17

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