Impact of age at the second implantation, experience of amplification use, and long-term binaural experience on sound localization of children with bilateral cochlear implants
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引用次数: 0
Abstract
Objectives
To assess the influence of three factors using retrospective chart review: age at which 2nd cochlear implant (CI) is implanted, prior hearing aid (HA) experience in the 2nd CI ear, and long-term experience with bilateral cochlear implants (BICIs) on sound localization in children with sequential BICIs.
Methods
Mean absolute error (MAE) in localizing speech noise of 60 children with sequential BICIs was compared across four age groups of the 2nd CI (1–5.0; 5.1–10.0; 10.1–14.0; & 14.1–19.0 years) and two extents of prior HA experience (more than and less than one year). MAE was also longitudinally analyzed after 4–6 years of experience with BICI involving 18 participants out of 60.
Results
Children who received 2nd CI before five years of age demonstrated significantly better localization than those who received it after ten years of age. More than one year of prior HA experience in the 2nd CI ear and extensive experience with sequential BICIs significantly enhanced localization performance. Inter-implant intervals and age at the 2nd CI showed a significant positive correlation with the MAE (poorer localization).
Conclusion
The results indicate that age at 2nd CI is important in developing sound localization skills. Based on the results, obtaining 2nd CI within the first five years of life and no later than ten years old is recommended. The results also suggest that longer use of amplification before 2nd CI and prolonged BICI experience significantly fosters localization development.
目的 通过回顾性图表评估三个因素对连续植入双侧人工耳蜗（BICI）儿童声音定位的影响：植入第 2 个人工耳蜗（CI）的年龄、第 2 个人工耳蜗耳部以前的助听器（HA）使用经验以及长期使用双侧人工耳蜗（BICI）的经验。方法 比较了 60 名顺序性 BICIs 患儿第二只 CI 耳朵的四个年龄组（1-5.0 岁；5.1-10.0 岁；10.1-14.0 岁；&；14.1-19.0 岁）和两种程度的 HA 经验（一年以上和一年以下）对语音噪声定位的平均绝对误差 (MAE)。在 60 名参与者中，有 18 人在使用 BICI 4-6 年后对 MAE 进行了纵向分析。在第 2 个 CI 耳朵上有一年以上的 HA 经验和连续 BICI 的丰富经验可显著提高定位效果。种植体间的间隔和接受第二次 CI 时的年龄与 MAE（较差的定位能力）呈显著正相关。根据这些结果，建议在出生后的头五年内植入第二颗 CI，最迟不超过十岁。结果还表明，在进行第二次 CI 之前使用扩音器的时间较长，以及长时间的 BICI 体验可显著促进定位能力的发展。
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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