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Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach
Hearing preservation surgery constitutes a considerable branch of cochlear implantation surgery and is being steadily developed and perfected. The aim of the study was to verify if insertion of a cochlear implant electrode according to individually calculated linear insertion depth improves hearing...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Pacini Editore Srl
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265667/ https://www.ncbi.nlm.nih.gov/pubmed/30498276 http://dx.doi.org/10.14639/0392-100X-1579 |
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author | SKARZYNSKI, H. MATUSIAK, M. FURMANEK, M. PILKA, A. WLODARCZYK, E. OLDAK, M. SKARZYNSKI, P.H. |
author_facet | SKARZYNSKI, H. MATUSIAK, M. FURMANEK, M. PILKA, A. WLODARCZYK, E. OLDAK, M. SKARZYNSKI, P.H. |
author_sort | SKARZYNSKI, H. |
collection | PubMed |
description | Hearing preservation surgery constitutes a considerable branch of cochlear implantation surgery and is being steadily developed and perfected. The aim of the study was to verify if insertion of a cochlear implant electrode according to individually calculated linear insertion depth improves hearing preservation. We evaluated the relations between the size of a cochlea, insertion depth angle, linear insertion depth and hearing preservation rate (HP) according to Hearing Preservation Classification in a retrospective case review of 54 patients implanted with a slim straight electrode Nucleus CI422 in 2008-2011. Group HP was 0.75 at activation, 0.67 at 12 months (for 53 patients) and 0.60 at 24 months. In 53 cases, the mean insertion depth angle was 375° (SD 17°); mean calculated cochlear duct length 35.87 mm (SD 1.95); mean calculated linear insertion depth 23.14 mm (SD 1.68). There was no significantly relevant relation between HP values and angular insertion depth or insertion depth. Preoperative measurements of cochlea and specific parameters such as linear insertion depth have no effect on hearing preservation. Poor hearing preservation in some deep insertion cases cannot be explained entirely by the electrode position. |
format | Online Article Text |
id | pubmed-6265667 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Pacini Editore Srl |
record_format | MEDLINE/PubMed |
spelling | pubmed-62656672019-01-21 Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach SKARZYNSKI, H. MATUSIAK, M. FURMANEK, M. PILKA, A. WLODARCZYK, E. OLDAK, M. SKARZYNSKI, P.H. Acta Otorhinolaryngol Ital Otology Hearing preservation surgery constitutes a considerable branch of cochlear implantation surgery and is being steadily developed and perfected. The aim of the study was to verify if insertion of a cochlear implant electrode according to individually calculated linear insertion depth improves hearing preservation. We evaluated the relations between the size of a cochlea, insertion depth angle, linear insertion depth and hearing preservation rate (HP) according to Hearing Preservation Classification in a retrospective case review of 54 patients implanted with a slim straight electrode Nucleus CI422 in 2008-2011. Group HP was 0.75 at activation, 0.67 at 12 months (for 53 patients) and 0.60 at 24 months. In 53 cases, the mean insertion depth angle was 375° (SD 17°); mean calculated cochlear duct length 35.87 mm (SD 1.95); mean calculated linear insertion depth 23.14 mm (SD 1.68). There was no significantly relevant relation between HP values and angular insertion depth or insertion depth. Preoperative measurements of cochlea and specific parameters such as linear insertion depth have no effect on hearing preservation. Poor hearing preservation in some deep insertion cases cannot be explained entirely by the electrode position. Pacini Editore Srl 2018-10 /pmc/articles/PMC6265667/ /pubmed/30498276 http://dx.doi.org/10.14639/0392-100X-1579 Text en Società Italiana di Otorinolaringologia e Chirurgia Cervico-Facciale, Rome, Italy http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0), which permits for noncommercial use, distribution, and reproduction in any digital medium, provided the original work is properly cited and is not altered in any way. For details, please refer to https://creativecommons.org/licenses/by-nc-nd/4.0/ |
spellingShingle | Otology SKARZYNSKI, H. MATUSIAK, M. FURMANEK, M. PILKA, A. WLODARCZYK, E. OLDAK, M. SKARZYNSKI, P.H. Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title | Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title_full | Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title_fullStr | Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title_full_unstemmed | Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title_short | Radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (CI422) and round window approach |
title_sort | radiologic measurement of cochlea and hearing preservation rate using slim straight electrode (ci422) and round window approach |
topic | Otology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265667/ https://www.ncbi.nlm.nih.gov/pubmed/30498276 http://dx.doi.org/10.14639/0392-100X-1579 |
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