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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한이비인후과학회 Clinical and Experimental Otorhinolaryngology Clinical and Experimental Otorhinolaryngology 제14권 제3호
- 발행연도
- 2021.8
- 수록면
- 287 - 294 (8page)
- DOI
- https://doi.org/10.21053/ceo.2021.00752
이용수
초록· 키워드
오류제보하기
Objectives. Malformations of the inner ear account for approximately 20% of cases of congenital deafness. In current practice, straight arrays with circumferential electrodes (i.e., full-banded electrodes) are widely used in severely malformed cochleae. However, the unpredictability of the location of residual spiral ganglion neurons in such malformations argues against obligatorily using full-banded electrodes in all cases. Here, we present our experience of electrically evoked compound action potential (ECAP) and radiography-based selection of an appropriate electrode for severely malformed cochleae.
Methods. Three patients with severely malformed cochleae, showing cochlear hypoplasia type II (CH-II), incomplete partition type I (IP-I), and cochlear aplasia with a dilated vestibule (CADV), respectively, were included, and the cochlear nerve deficiency (CND) was evaluated. A full-banded electrode (CI24RE(ST)) and slim modiolar electrode (CI632) were alternately inserted to compare ECAP responses and electrode position.
Results. In patient 1 (CH-II with CND), who had initially undergone cochlear implantation (CI) using a lateral wall electrode (CI422), revision CI was performed due to incomplete insertion of CI422 and resultant unsatisfactory performance by explanting the CI422 and re-inserting the CI24RE(ST) and CI632 sequentially. Although both electrodes elicited reliable ECAP responses with correct positioning, CI24RE(ST) showed overall lower ECAP thresholds compared to CI632; thus, CI24RE(ST) was selected. In patient 2 (IP-I with CND), CI632 elicited superior ECAP responses relative to CI24RE(ST), with correct positioning of the electrode; CI632 was chosen. In patient 3 (CADV), CI632 did not elicit an ECAP response, while meaningful ECAP responses were obtained with the CI24RE(ST) array once correct positioning was achieved. All patients’ auditory performance markedly improved postoperatively.
Conclusion. The ECAP and radiography-based strategy to identify an appropriate electrode may be useful for severely malformed cochleae, leading to enhanced functional outcomes. The practice of sticking to full-banded straight electrodes may not always be optimal for IP-I and CH-II.
목차
등록된 정보가 없습니다.
참고문헌 (15)
참고문헌 신청
Suk Y / 2015 / Surgical outcomes after cochlear implantation in children with incomplete partition type I: comparison with deaf children with a normal inner ear structure / Otol Neurotol 36(1):e11~e17
Eftekharian A / 2019 / Cochlear implantation in 8 incomplete partition type I / Eur Arch Otorhinolaryngol 276(10):2763~2768
Jeong SW / 2012 / Cochlear implantation in children with cochlear aplasia / Acta Otolaryngol 132(9):910~915
Schmidt JM / 1985 / Cochlear neuronal populations in developmental defects of the inner ear: implications for cochlear implantation / Acta Otolaryngol 99(1-2):14~20
Nadol JB Jr / 1997 / Patterns of neural degeneration in the human cochlea and auditory nerve: implications for cochlear implantation / Otolaryngol Head Neck Surg 117(3 Pt 1):220~228
Eftekharian A / 2019 / Cochlear implantation in 8 incomplete partition type I / Eur Arch Otorhinolaryngol 276(10):2763~2768
Jeong SW / 2012 / Cochlear implantation in children with cochlear aplasia / Acta Otolaryngol 132(9):910~915
Schmidt JM / 1985 / Cochlear neuronal populations in developmental defects of the inner ear: implications for cochlear implantation / Acta Otolaryngol 99(1-2):14~20
Nadol JB Jr / 1997 / Patterns of neural degeneration in the human cochlea and auditory nerve: implications for cochlear implantation / Otolaryngol Head Neck Surg 117(3 Pt 1):220~228
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