Effects of bilateral cochlear implants in children: Timing of second surgery and the significance of wearing bilateral cochlear implants in Japan |
| |
| Affiliation: | 1. Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan;2. Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, Osaka, Japan;3. Osaka Health Science University, Osaka, Japan;4. Shiga General Hospital, Shiga, Japan;1. Department of Otolaryngology, Taizhou Central Hospital, Taizhou University, Taizhou 318000, China;2. Allergy Center, Otorhinolaryngology Hospital, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China;3. Department of Otolaryngology, Zhuhai People''s Hospital, Zhuhai Hospital Affiliated with Jinan University, Zhuhai 519000, China;4. Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai 200031, China;1. Department of Otorhinolaryngology, Isala Clinics, Zwolle, the Netherlands;2. Department of Innovation and Science, Isala Clinics, Zwolle, the Netherlands;1. Department of Otolaryngology, National Defense Medical College, Saitama, Japan;2. Department of Otolaryngology-Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan |
| |
| Abstract: | ObjectiveThis study aims to evaluate the speech perception with first, second, or bilateral cochlear implants (CI) and to reveal the effects of wearing bilateral CI in children.MethodsAfter reviewing the medical records, a total of 19 children who underwent bilateral cochlear implantation serially between 2012 and 2015 at Kyoto University Hospital (tertiary referral center) were included in this study. All patients had no delay in language development. The study group comprised nine boys and ten girls, and their age ranged from 3 years 8 months to 12 years 5 months when they underwent the tests in this study. The mean and median ages were 8 years 6 months and 9 years 2 months, respectively.We measured the appropriate signal/noise ratio (SNR) to test speech perception of Japanese language in noise by testing the hearing ability of unilateral CI patients with or without noise and by surveying the sound environment in a classroom of a mainstream elementary school.Speech perception in quiet and noise and the left-right localization ability were examined using first, second, or bilateral cochlear implants in all patients.ResultsConsidering the results of hearing ability tests with noise and the SNR of the elementary school classrooms, we decided to use SNR of +10 dB to evaluate the speech perception ability in noise. The speech perception ability using the second CI was significantly worse in patients undergoing second cochlear implantation after 7 years old than in those who underwent surgery before 3.5 years old. Moreover, patients undergoing second cochlear implantation before 7 years old showed significantly better left–right localization of high-frequency sound.ConclusionsSecond cochlear implantation before 7 years old is a critical factor in acquiring beneficial speech perception ability with the second CI and sound localization ability with the bilateral CI. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
