Influence of cochlear coverage on speech perception in single sided deafness, bimodal, and bilateral implanted cochlear implant patients.

IF 1.9 3区 医学 Q2 OTORHINOLARYNGOLOGY European Archives of Oto-Rhino-Laryngology Pub Date : 2024-12-17 DOI:10.1007/s00405-024-09086-x
Jennifer L Spiegel, Joachim Mueller, Rebecca Boehnlein, John-Martin Hempel, Judith E Spiro, Bernhard G Weiss, Mattis Bertlich, Martin Canis, Tobias Rader
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Abstract

Purpose: Individualized cochlear implantation (CI) is essential to facilitate optimal hearing results for patients. Influence of cochlear coverage (CC) has been studied, however without consideration of different CI-categories, like single sided deafness (SSD), bimodal, and bilateral separately.

Methods: Retrospective analysis of preoperative CT scans was performed at a tertiary center. For each patient their individual CC with the selected electrode array was calculated off the complete CDL. Patients were categorized into SSD (n = 30), bimodal (n = 72), and bilateral CI patients (n = 29). Speech perception within the first 12 months post-implantation was compared between patient groups with shorter and longer CC. For subgroup analysis the cutoff between a shorter or longer CC was identified by the median.

Results: Cutoff between a shorter or longer CC was identified at 65% off the complete CDL for SSD and bimodal patients, and at 70% for bilateral patients. In SSD-patients longer CC was associated with better performance at activation (CCshorter 20.0 ± 28.9% vs. CClonger 31.5 ± 24.7%; p = 0.04) and no benefit was found with deeper insertion at 12 months. No significant benefit was found for deeper insertion in bimodal and bilateral patients.

Conclusions: Capacities of hearing performance seem to differ between SSD, bimodal and bilateral patients within the first year after implantation with regards to cochlear coverage. SSD-patients appear to benefit from deeper insertion than 65% up to 12 months after implantation. However, these results should be interpreted with caution, hence development of speech perception with CI is influenced by a whole range of factors, and bimodal and bilateral treated patients are extremely heterogenous patient groups.

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目的:个性化的人工耳蜗植入(CI)对患者获得最佳听力效果至关重要。然而,人们对人工耳蜗覆盖(CC)的影响进行了研究,但没有考虑到不同的 CI 类别,如单侧耳聋(SSD)、双模态和双侧耳聋:方法: 一家三级医疗中心对术前 CT 扫描进行了回顾性分析。根据完整的 CDL 计算出每位患者的 CC 和所选电极阵列。患者被分为 SSD(30 人)、双模态(72 人)和双侧 CI 患者(29 人)。在植入后的前 12 个月内,对 CC 较短和较长患者组的语音感知进行了比较。在进行亚组分析时,以中位数确定较短或较长 CC 的分界点:对于 SSD 和双峰患者,CC 较短或较长的分界点被确定为完整 CDL 的 65%,对于双侧患者,则为 70%。在 SSD 患者中,较长的 CC 与激活时的较佳表现相关(CCshorter 20.0 ± 28.9% vs. CClonger 31.5 ± 24.7%; p = 0.04),而在 12 个月时,插入较深的 CC 则无益处。在双模态和双侧患者中,深度植入也没有发现明显的益处:结论:在植入人工耳蜗后的第一年内,SSD、双模态和双侧患者的听力表现能力似乎存在差异。在植入后 12 个月内,SSD 患者似乎比 65% 的患者受益于更深的植入深度。然而,在解释这些结果时应谨慎,因为使用人工耳蜗进行言语感知的发展受到一系列因素的影响,而且双模态和双侧治疗的患者是极不相同的患者群体。
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
CiteScore
5.30
自引率
7.70%
发文量
537
审稿时长
2-4 weeks
期刊介绍: Official Journal of European Union of Medical Specialists – ORL Section and Board Official Journal of Confederation of European Oto-Rhino-Laryngology Head and Neck Surgery "European Archives of Oto-Rhino-Laryngology" publishes original clinical reports and clinically relevant experimental studies, as well as short communications presenting new results of special interest. With peer review by a respected international editorial board and prompt English-language publication, the journal provides rapid dissemination of information by authors from around the world. This particular feature makes it the journal of choice for readers who want to be informed about the continuing state of the art concerning basic sciences and the diagnosis and management of diseases of the head and neck on an international level. European Archives of Oto-Rhino-Laryngology was founded in 1864 as "Archiv für Ohrenheilkunde" by A. von Tröltsch, A. Politzer and H. Schwartze.
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