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Does cochlear implant electrode array design affect audiologic outcomes? A systematic review and meta-analysis.

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Title: Does cochlear implant electrode array design affect audiologic outcomes? A systematic review and meta-analysis.
Authors: Duckett, Kelsey A. (AUTHOR), Kassir, Mohamed Faisal (AUTHOR), Munhall, Christopher C. (AUTHOR), Schvartz-Leyzac, Kara C. (AUTHOR), Nguyen, Shaun A. (AUTHOR), Labadie, Robert F. (AUTHOR)
Source: Acta Oto-Laryngologica. Feb2026, Vol. 146 Issue 2, p159-175. 17p.
Subjects: Cochlear implants, CINAHL database, Treatment effectiveness, Meta-analysis, Descriptive statistics, Chi-squared test, Audiometry, Systematic reviews, MEDLINE, Medical databases, Quality of life, Hearing disorders, Online information services, Confidence intervals, Speech perception, Prosthesis design & construction, Electrodes
Geographic Terms: South Carolina
Abstract (English): Background: There is conflicting literature regarding whether cochlear implants (CI) electrode array (EA) selection impacts audiologic outcomes. Objective: To compare outcomes for the two EA designs, precurved and straight. Methods: A systematic search of CINAHL, Cochrane Library, PubMed, and SCOPUS was conducted according to PRISMA guidelines. Included studies reported word recognition scores, sentence recognition scores in quiet or noise, or hearing preservation (HP) rates for patients with post-lingual hearing loss who underwent CI with either EA type. Primary outcome measures included mean difference (baseline vs. post-surgery) and proportions (%) with 95% confidence intervals (CI). Results: Of 4134 unique abstracts screened, 92 studies (N = 5365 patients, 5658 ears) were included. Mean improvement of overall word recognition scores for patients with precurved EAs (46.5%, 95% CI: 43.13–49.88%) was significantly (p = 0.0009) superior to that of patients with straight EAs (36.33%; 95% CI, 31.4–41.27%). There was no significant difference between mean improvement of Azbio Quiet scores, mean improvement of overall sentences in noise scores, or HP or pure-tone averages between patients with precurved EAs and those with straight EAs. Conclusions: Precurved EAs were superior in mean word recognition score improvement, but there was no superior EA design regarding sentence recognition or hearing preservation. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 关于人工耳蜗 (CI) 电极阵列 (EA) 的选择是否会影响听力结果, 出现相互矛盾的文章。 比较两种 EA 设计(预弯曲和直式)的结果。 根据 PRISMA 指南对 CINAHL、Cochrane 图书馆、PubMed 和 SCOPUS 进行系统搜索。所纳入的研究报告了接受任何一种 EA 类型的CI的患者的单词识别得分、安静或噪音下的句子识别得分或听力保留 (HP) 率。主要结果测量包括平均差异(基线与术后)和比例 (%) 以及 95% 置信区间 (CI)。 从接受筛选的 4134 篇独特摘要中, 纳入了 92 项研究(N = 5365 名患者, 5658 只耳朵)。预弯曲 EA 患者整体单词识别得分的平均改善(46.5%, 95% CI: 43.13–49.88%)显著(p = 0.0009)优于直线 EA 患者(36.33%；95% CI, 31.4–41.27%)。预弯曲 EA 患者和直线 EA 患者之间的 Azbio Quiet 得分的平均改善、噪音中整体句子得分的平均改善、HP 或纯音平均值均无显著差异。 预弯曲 EA 在平均单词识别得分改善方面更胜一筹, 但在句子识别或听力保护方面还没有优越的 EA 设计。 [ABSTRACT FROM AUTHOR]
Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Label: Title
  Group: Ti
  Data: Does cochlear implant electrode array design affect audiologic outcomes? A systematic review and meta-analysis.
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  Data: <searchLink fieldCode="AR" term="%22Duckett%2C+Kelsey+A%2E%22">Duckett, Kelsey A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kassir%2C+Mohamed+Faisal%22">Kassir, Mohamed Faisal</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Munhall%2C+Christopher+C%2E%22">Munhall, Christopher C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schvartz-Leyzac%2C+Kara+C%2E%22">Schvartz-Leyzac, Kara C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nguyen%2C+Shaun+A%2E%22">Nguyen, Shaun A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Labadie%2C+Robert+F%2E%22">Labadie, Robert F.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Acta+Oto-Laryngologica%22">Acta Oto-Laryngologica</searchLink>. Feb2026, Vol. 146 Issue 2, p159-175. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Cochlear+implants%22">Cochlear implants</searchLink><br /><searchLink fieldCode="DE" term="%22CINAHL+database%22">CINAHL database</searchLink><br /><searchLink fieldCode="DE" term="%22Treatment+effectiveness%22">Treatment effectiveness</searchLink><br /><searchLink fieldCode="DE" term="%22Meta-analysis%22">Meta-analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+statistics%22">Descriptive statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Chi-squared+test%22">Chi-squared test</searchLink><br /><searchLink fieldCode="DE" term="%22Audiometry%22">Audiometry</searchLink><br /><searchLink fieldCode="DE" term="%22Systematic+reviews%22">Systematic reviews</searchLink><br /><searchLink fieldCode="DE" term="%22MEDLINE%22">MEDLINE</searchLink><br /><searchLink fieldCode="DE" term="%22Medical+databases%22">Medical databases</searchLink><br /><searchLink fieldCode="DE" term="%22Quality+of+life%22">Quality of life</searchLink><br /><searchLink fieldCode="DE" term="%22Hearing+disorders%22">Hearing disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Online+information+services%22">Online information services</searchLink><br /><searchLink fieldCode="DE" term="%22Confidence+intervals%22">Confidence intervals</searchLink><br /><searchLink fieldCode="DE" term="%22Speech+perception%22">Speech perception</searchLink><br /><searchLink fieldCode="DE" term="%22Prosthesis+design+%26+construction%22">Prosthesis design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22South+Carolina%22">South Carolina</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Background: There is conflicting literature regarding whether cochlear implants (CI) electrode array (EA) selection impacts audiologic outcomes. Objective: To compare outcomes for the two EA designs, precurved and straight. Methods: A systematic search of CINAHL, Cochrane Library, PubMed, and SCOPUS was conducted according to PRISMA guidelines. Included studies reported word recognition scores, sentence recognition scores in quiet or noise, or hearing preservation (HP) rates for patients with post-lingual hearing loss who underwent CI with either EA type. Primary outcome measures included mean difference (baseline vs. post-surgery) and proportions (%) with 95% confidence intervals (CI). Results: Of 4134 unique abstracts screened, 92 studies (N = 5365 patients, 5658 ears) were included. Mean improvement of overall word recognition scores for patients with precurved EAs (46.5%, 95% CI: 43.13–49.88%) was significantly (p = 0.0009) superior to that of patients with straight EAs (36.33%; 95% CI, 31.4–41.27%). There was no significant difference between mean improvement of Azbio Quiet scores, mean improvement of overall sentences in noise scores, or HP or pure-tone averages between patients with precurved EAs and those with straight EAs. Conclusions: Precurved EAs were superior in mean word recognition score improvement, but there was no superior EA design regarding sentence recognition or hearing preservation. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 关于人工耳蜗 (CI) 电极阵列 (EA) 的选择是否会影响听力结果, 出现相互矛盾的文章。 比较两种 EA 设计(预弯曲和直式)的结果。 根据 PRISMA 指南对 CINAHL、Cochrane 图书馆、PubMed 和 SCOPUS 进行系统搜索。所纳入的研究报告了接受任何一种 EA 类型的CI的患者的单词识别得分、安静或噪音下的句子识别得分或听力保留 (HP) 率。主要结果测量包括平均差异(基线与术后)和比例 (%) 以及 95% 置信区间 (CI)。 从接受筛选的 4134 篇独特摘要中, 纳入了 92 项研究(N = 5365 名患者, 5658 只耳朵)。预弯曲 EA 患者整体单词识别得分的平均改善(46.5%, 95% CI: 43.13–49.88%)显著(p = 0.0009)优于直线 EA 患者(36.33%；95% CI, 31.4–41.27%)。预弯曲 EA 患者和直线 EA 患者之间的 Azbio Quiet 得分的平均改善、噪音中整体句子得分的平均改善、HP 或纯音平均值均无显著差异。 预弯曲 EA 在平均单词识别得分改善方面更胜一筹, 但在句子识别或听力保护方面还没有优越的 EA 设计。 [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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    Identifiers:
      – Type: doi
        Value: 10.1080/00016489.2025.2451074
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      – Code: eng
        Text: English
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        StartPage: 159
    Subjects:
      – SubjectFull: Cochlear implants
        Type: general
      – SubjectFull: CINAHL database
        Type: general
      – SubjectFull: Treatment effectiveness
        Type: general
      – SubjectFull: Meta-analysis
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      – SubjectFull: Descriptive statistics
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      – SubjectFull: Chi-squared test
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      – SubjectFull: Audiometry
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      – SubjectFull: Systematic reviews
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      – SubjectFull: Medical databases
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      – SubjectFull: Quality of life
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      – SubjectFull: Hearing disorders
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      – SubjectFull: Online information services
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      – SubjectFull: Confidence intervals
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      – SubjectFull: Speech perception
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      – SubjectFull: Prosthesis design & construction
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      – SubjectFull: Electrodes
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      – SubjectFull: South Carolina
        Type: general
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      – TitleFull: Does cochlear implant electrode array design affect audiologic outcomes? A systematic review and meta-analysis.
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              M: 02
              Text: Feb2026
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              Y: 2026
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