The Journal of International
Advanced Otology
Original Article

The Results of Cochlear Implantation in the Inner Ear Malformations


Department of Otorhinolaryngology, Çukurova University Faculty of Medicine, Adana, Turkey

J Int Adv Otol 2022; 18: 203-209
DOI: 10.5152/iao.2022.20134
Read: 1183 Downloads: 589 Published: 01 May 2022

BACKGROUND: Cochlear implants are arguably the most successful neural prosthesis today. Cochlear implantation has several difficulties in patients with internal ear anomalies. This study was performed to analyze intraoperative, postoperative findings, and auditory performance of 55 patients who had inner ear malformations and were treated with cochlear implants at Otorhinolaryngology Department of Çukurova University Hospital.

METHODS: Auditory performances were analyzed in 30 of 55 patients. Patients with cochlear anomalies were evaluated as group I, patients with vestibular malformation as group II, and patients with the normal bone labyrinth as group III. Listening progress profiles and meaningful auditory integration scale tests were used to determine performances.

RESULTS: Comparison between the listening progress profiles test performance of the groups at 12th and 18th month of group I was significantly lower than other groups (P < .05) and reached at the same level after the 24th month. Comparison between the meaningful auditory integration scale test performance of groups at 24th and 36th month of group I was significantly lower than other groups (P < .05). Perilymph gusher was observed in 3 patients who had incomplete partition I malformation. Oozing was observed in 50% of incomplete partition II patients. Facial nerve traced a variant course in 4 of 55 patients and 6 patients had postoperative meningitis.

CONCLUSION: Initially patients with inner ear anomalies showed that the level of language development was worse than patients with normal bone anatomy. However, it was shown that they both reached the same point as a result. Facial nerve anomaly and meningitis risk is higher in patients with inner ear malformations.

Cite this article as: Onan E, Tuncer U, Surmelioglu O, et al. The results of cochlear implantation in the inner ear malformations. J Int Adv Otol.2022;18(3):203-209.

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