Department of Otorhinolaryngology, Head and Neck Surgery, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Waldstrasse 1, 91054, Erlangen, Germany.
Department of Neuroradiology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054, Erlangen, Germany.
Eur Arch Otorhinolaryngol. 2023 Jun;280(6):2707-2714. doi: 10.1007/s00405-022-07756-2. Epub 2022 Nov 27.
The aims of this study were to compare speech recognition at different postoperative times for both ears in bilaterally implanted patients and to assess the influence of the time of deafness, frequency-to-place mismatch, angular insertion depth (AID) and angular separation between neighbouring electrode contacts on audiometric outcomes.
This study was performed at an academic tertiary referral centre. A total of 19 adult patients (6 men, 13 women), who received sequential bilateral implantation with lateral wall electrode arrays, were analysed in retrospective. Statistical analysis was performed using two-sided t test, Wilcoxon test, median test, and Spearman's correlation.
Postlingually deafened patients (deafness after the age of 10) had a significantly better speech perception (WRS65[CI]) than the perilingually deafened subjects (deafness at the age of 1-10 years) (p < 0.001). Comparison of cochlear duct length between peri- and postlingually deafened subjects showed a slightly significantly smaller cochleae in perilingual patients (p = 0.045). No association between frequency-to-place mismatch as well as angular separation and speech perception could be detected. There was even no significant difference between the both ears in the intraindividual comparison, even if insertion parameters differed.
The exact electrode position seems to have less influence on the speech comprehension of CI patients than already established parameters as preoperative speech recognition or duration of deafness.
本研究旨在比较双侧植入患者双耳在不同术后时间的言语识别能力，并评估耳聋时间、频率-位置不匹配、角插入深度（AID）和相邻电极接触之间的角度分离对听力学结果的影响。
本研究在一个学术性的三级转诊中心进行。共分析了 19 名接受侧壁电极阵列序贯双侧植入的成年患者（6 名男性，13 名女性）。采用双侧 t 检验、Wilcoxon 检验、中位数检验和 Spearman 相关分析进行统计学分析。
后天性耳聋患者（10 岁后耳聋）的言语感知（WRS65[CI]）明显优于先天性耳聋患者（1-10 岁耳聋）（p<0.001）。对先天性和后天性耳聋患者的耳蜗管长度进行比较，发现语言性耳聋患者的耳蜗较小（p=0.045）。频率-位置不匹配以及角度分离与言语感知之间没有关联。即使在插入参数不同的情况下，个体内双耳之间也没有明显差异。
与术前言语识别或耳聋持续时间等已确立的参数相比，电极的确切位置对人工耳蜗患者的言语理解能力的影响较小。
