人工耳蜗植入阵列在耳蜗内的深度与性能结果。

Depth of Cochlear Implant Array Within the Cochlea and Performance Outcome.

作者信息

Hilly Ohad, Smith Leah, Hwang Euna, Shipp David, Symons Sean, Nedzelski Julian M, Chen Joseph M, Lin Vincent Y W

机构信息

Department of Otolaryngology and Head and Neck Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto. ON, Canada Department of Otolaryngology and Head and Neck Surgery, Rabin Medical Center, Tel Aviv University, Tel Aviv, Israel

Department of Otolaryngology and Head and Neck Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto. ON, Canada.

出版信息

Ann Otol Rhinol Laryngol. 2016 Nov;125(11):886-892. doi: 10.1177/0003489416660111. Epub 2016 Jul 21.

DOI:10.1177/0003489416660111

PMID:27443343

Abstract

OBJECTIVE

To evaluate whether the depth of cochlear implant array within the cochlea affects performance outcomes 1 year following cochlear implantation.

METHODS

A retrospective case review of 120 patients who were implanted with the Advanced Bionics HiFocus 1J. Post-implantation plain-radiographs were retrospectively reviewed, and the depth of insertion was measured in degrees from the round window to the electrode tip. Correlation between the depth of insertion and 1-year post-activation Hearing in Noise Test (HINT) scores was analyzed. Intrascala position was not assessed.

RESULTS

Depth of electrode insertion ranged from 180° to 720°, and HINT scores ranged from 0% to 100%. A Mann-Whitney U test demonstrated significantly improved 1-year post-activation HINT scores in patients with an insertion depth of 360° or more in comparison with patients with insertion depth of less than 360° (81% vs 61%, P = .048). Patients with 13 to 15 contacts within cochlear turns performed as well as patients with full insertion of all 16 contacts, while patients with only 12 contacts performed poorly.

CONCLUSIONS

Insertion depth of the AB HiFocus 1J electrode of less than 360° is associated with reduced 1-year post-activation HINT scores when compared with deeper insertions. Partial insertion of 13 active contacts or more led to similar results as full insertion.

摘要

目的

评估人工耳蜗植入体在耳蜗内的深度是否会影响人工耳蜗植入术后1年的性能结果。

方法

对120例植入Advanced Bionics HiFocus 1J的患者进行回顾性病例分析。回顾性分析植入后的平片，并测量从圆窗到电极尖端的插入深度（以度数为单位）。分析插入深度与激活后1年噪声环境下听力测试（HINT）分数之间的相关性。未评估电极在蜗管内的位置。

结果

电极插入深度范围为180°至720°，HINT分数范围为0%至100%。Mann-Whitney U检验表明，与插入深度小于360°的患者相比，插入深度为360°或更深的患者激活后1年的HINT分数显著提高（81%对61%，P = 0.048）。蜗管内有13至15个电极触点的患者与所有16个电极触点完全插入的患者表现相当，而只有12个电极触点的患者表现较差。