Journal of Capital Medical University ›› 2024, Vol. 45 ›› Issue (6): 946-955.doi: 10.3969/j.issn.1006-7795.2024.06.003

Previous Articles     Next Articles

Long-term outcomes after cochlear implantation with customized electrodes via transmastoid slotted labyrinthotomy approach in patients with common cavity deformity

Zhang Lifang1, Wei Xingmei2, Kong Ying2, Yang Mengge3, Gao Zhencheng2, Xue Shujin2, Lu Simeng2, Chen Biao2,  Chen Jingyuan2, Shi Ying2, Li Yongxin2*   

  1. 1.Department of Rehabilitation Engineering, China Civil Affairs University, Beijing 102600, China； 2.Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China；3.Department of Otorhinolaryngology, Beijing Chuiyangliu Hospital, Beijing 100022, China
  • Received:2024-08-25 Online:2024-12-21 Published:2024-12-18
  • Supported by:
    This study was supported by National Natural Science Foundation of China (81670923), National Key Research and Development Program of China (2022YFC2402705), Natural Science Foundation of Beijing  (7244308), Beijing Municipal Administration of Hospitals' Youth Programme (QML20230204), Funding Program for Basic Research Operating Costs of Central Universities (JBKYKJCX2024-7).

PDF

4

Abstract: Objective  To investigate the long-term development of auditory and speech function after cochlear implantation (CI) using the transmastoid slotted labyrinthotomy approach (TSLA) with customized electrodes in patients with common cavity deformity (CCD).Methods  Thirty-six children with CCD, all of whom underwent unilateral CI, were included in this study, and 61 children match on age who underwent unilateral CI but with normal inner ear structure were selected as a control group from Beijing Tongren Hospital, Capital Medical University. The auditory and speech performance of all subjects were assessed by the professionals staff with uniform standardized training using the following assessment tools: Categories of Auditory Performance (CAP), Speech Intelligibility Rating (SIR), Infant-Toddler Meaningful Auditory Integration Scale/Meaningful Auditory Integration Scale (IT-MAIS/MAIS), and Meaningful Use of Speech Scale (MUSS). Assessments were performed at pre-surgery and 1, 3, 6, 12, 18, 24, 36, 48, 60, 72, and 84 months after CI switch-on.Results  The generalized estimating equation analysis suggested that the preoperative and postoperative auditory speech rehabilitation effects of the subjects in this study were statistically significant in terms of group, time, and their interaction effects (P<0.05). The differences in CAP scores of the CCD group  were statistically significant among preoperative and postoperative 1, 3, 6, 12, and 18 months after switch-on (P<0.05), while the increase stabilized among 24, 36, 48, and 60  months (P>0.05). The percentages of IT-MAIS/MAIS scores were significantly different among preoperative and postoperative 1, 3, 6, 12, and 24 months after switch-on (P< 0.05), with no significant difference among 24, 36, 48, and 60 months (P>0.05). SIR scores were not significantly different  among preoperative and 1, 3 months after switch-on (P>0.05), but significantly different among 6, 12, and 18 months after switch-on (P<0.05), again it showed no significantly difference among 18, 24, 36, 48, and 60 months after switch-on (P> 0.05). The percentages of MUSS score was not significantly different among preoperative and 1, 3 months after switch-on (P>0.05), among 3, 6, 12, and 18 months after switch-on (P<0.05), and among 24, 36, 48, and 60 months after switch-on (P>0.05).Compared with the control group, CCD group had significantly lower CAP scores and percentage of IT-MAIS/MAIS scores from 1 to 60 months after switch-on (P<0.05), and significantly lower SIR scores and percentage of MUSS scores from 3 to 60 months after switch-on (P<0.05). Conclusions  CI via the TSLA with customized electrodes can be effective in achieving long-term auditory and speech benefits in CCD children, but the development of auditory speech function is delayed after CI compared with that of children without structural abnormality of the inner ear. The development of auditory performance in children with CCD after CI shows a trend of rapid growth within 2 years of switch-on, and then a trend of slow growth after 2 years. The development of their speech ability shows a trend of rapid growth from 6 months to 18 months after switch-on, and then a trend of slow growth from 18 months to 7 years.

Key words: common cavity deformity, transmastoid slotted labyrinthotomy approach, cochlear implantation, auditory and speech rehabilitation outcomes

CLC Number: