Abstract
Objective: To determine audiological and clinical results of cochlear implantation (CI) comparing two populations with single-sided deafness (SSD): post-lingually deaf children between 6 and 12 years of age, and post-lingually deaf adults, in order to evaluate the effect of CI in different age groups.Design: Retrospective case review.Setting: Tertiary clinic.Patients and Method: Twenty-three children and twenty-one adult patients that were candidates for CI with single-side deafness were included. In all cases we evaluate: Speech perception thresholds; disyllabic words test (65 dB SPL) were performed in the modalities S0–SCI–SNH and Auditory Lateralization Test. The Speech, Spatial, and Qualities of Hearing Scale (SSQ) questionnaire was also used. All results were obtained after 12 months of CI activation.Results: In children, the most common etiology was idiopathic sensory-neural hearing loss. They showed positive results in the Auditory Lateralization Test. In the Speech Test, word recognition in noise improved from 2% preoperatively to 61.1% at a mean follow-up of 1 year (S0 condition) in children [test with signal in CI side 60% and signal normal hearing side (plugged) 31%]. The processor was used for >12 h in all cases. With respect to the SSQ questionnaire, parents were more satisfied within the postoperative period than within the preoperative period. For adults, the most common etiology was idiopathic sudden sensorineural hearing loss (SNHL). Positive results in the Auditory Lateralization Test were found. With respect to the Speech Test in quiet conditions: Word recognition in noise improved from 5.7% preoperatively to 71.8% at a mean follow-up of 1 year [test with signal in CI side 68% and signal normal hearing side (plugged) 41%]. The processor was used for >12 h. In the SSQ questionnaire, the post-operative results showed a beneficial effect of the CI. No adverse events were reported during the study period. No differences were found between children and adults in all tests in this study.Conclusions: Cochlear implantation in post-lingually deaf adults and children with SSD can achieve a speech perception outcome comparable with CI in conventional candidates. Improvements in spatial hearing were also observed. Careful patient selection and counseling regarding potential benefits are important to optimize outcomes.
Highlights
Items were related to speech perception, spatial hearing, or other qualities of hearing (Speech, Spatial, and Qualities of Hearing Scale, SSQ)
Forty-four cochlear implant users diagnosed with SSD were studied between June 2019 and February 2020
A decrease in peripheral auditory input and a. Children used their sound processor on a fulltime basis and showed a good acceptation of the devices; these results are similar to those described by Ganek et al, who did not observe significant changes in the use of cochlear implants as the children grew up or acquired more hearing experience
Summary
This is an observational, descriptive, transversal study performed at Complejo Hospitalario Universitario Insular Materno Infantil de Gran Canaria, Hipoacusia Unit, Dept. Conducted in adults, and children below 12 years of age, with acquired SSD, who received CI between October 2019 and. There were no implanted patients with ossification or any other cochlear anomalies that might prevent adults and parents or legal guardians of the included participants provided written consent information. Were presented randomly 10 times per subject, and the test was considered positive when the success rate was ≥ 80%. All the tests were conducted in soundproof cabins (two connected soundproof cabins: one for each subject and the other for the operator), and by using an Audiotest 340 Interacoustics. A questionnaire measured the postoperative change in the parent’s ratings of the child’s performance in specific listening situations. Regular reports about the device use, attitude, and performance were taken from adults and from parents [16, 17]
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