Electrode array positioning after cochlear reimplantation from single manufacturer.

IF 1.4 Q2 OTORHINOLARYNGOLOGY

COCHLEAR IMPLANTS INTERNATIONAL Pub Date : 2023-09-01 Epub Date: 2023-02-22 DOI:10.1080/14670100.2023.2179756

Miriam R Smetak, Shanik J Fernando, Matthew R O'Malley, Marc L Bennett, David S Haynes, Christopher T Wootten, Frank W Virgin, Robert T Dwyer, Benoit M Dawant, Jack H Noble, Robert F Labadie

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引用次数: 0

Abstract

Objective: To investigate whether revision surgery with the same device results in a change in three key indicators of electrode positioning: scalar location, mean modiolar distance ( $\bar{M}$ ), and angular insertion depth (AID).

Methods: Retrospective analysis of a cochlear implant database at a university-based tertiary medical center. Intra-operative CT scans were obtained after initial and revision implantation. Electrode array (EA) position was calculated using auto-segmentation techniques. Initial and revision scalar location, $\bar{M}$ , and AID were compared.

Results: Mean change in $\bar{M}$ for all ears was -0.07 mm (SD 0.24 mm; P = 0.16). The mean change in AID for all ears was -5° (SD 67°; P = 0.72). Three initial implantations with pre-curved EAs resulted in a translocation from Scala Tympani (ST) to Scala Vestibuli (SV). Two remained translocated after revision, while one was corrected when revised with a straight EA. An additional five translocations occurred after revision.

Conclusions: In this study examining revision cochlear implantation from a single manufacturer, we demonstrated no significant change in key indicators of EA positioning, even when revising with a different style of electrode. However, the revision EA is not necessarily confined by the initial trajectory and there may be an increased risk of translocation.

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来自单一制造商的人工耳蜗再植入术后的电极阵列定位。

目的研究使用同一设备进行的翻修手术是否会导致电极定位的三个关键指标发生变化：标度位置、平均模小叶距离（M¯）和角度插入深度（AID）：方法：对某大学三级医疗中心的人工耳蜗植入数据库进行回顾性分析。方法：对大学三级医疗中心的人工耳蜗植入数据库进行回顾性分析。使用自动分割技术计算电极阵列（EA）位置。对初次植入和修正植入的标度位置、M¯和AID进行比较：结果：所有耳朵的 M¯ 平均变化为 -0.07 mm (SD 0.24 mm; P = 0.16)。所有耳朵的 AID 平均变化为 -5° (SD 67°; P = 0.72)。三例最初植入的预弯 EAs 导致鼓室（ST）向前庭（SV）移位。其中两例在翻修后仍发生移位，而另一例在使用直型 EA 进行翻修后得到纠正。另有五例在翻修后发生了易位：在这项对单一制造商生产的人工耳蜗进行翻修的研究中，我们发现即使使用不同样式的电极进行翻修，EA 定位的关键指标也没有发生显著变化。然而，翻修后的 EA 不一定受初始轨迹的限制，可能会增加易位的风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

COCHLEAR IMPLANTS INTERNATIONAL Medicine-Otorhinolaryngology

CiteScore

3.10

自引率

0.00%

发文量

期刊介绍： Cochlear Implants International was founded as an interdisciplinary, peer-reviewed journal in response to the growing number of publications in the field of cochlear implants. It was designed to meet a need to include scientific contributions from all the disciplines that are represented in cochlear implant teams: audiology, medicine and surgery, speech therapy and speech pathology, psychology, hearing therapy, radiology, pathology, engineering and acoustics, teaching, and communication. The aim was to found a truly interdisciplinary journal, representing the full breadth of the field of cochlear implantation.