在用侧壁电极阵列植入耳植入后,纵向声学值和并发电极阻抗的变化
Meggan J Lind1,2, Camille C Dunn1, Alexander D Claussen1
1Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City Iowa.
概括
在耳植入器 (CI) 植入后,延迟发病的听力损失 (doHL) 是常见的,通常会逐渐发生,并且比预期晚发生. 大多数患者保持了功能性听力,在经历doHL的MED-EL阵列用户中没有阻抗变化.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 生物医学工程 生物医学工程
- 神经科学是一个神经科学.
背景情况:
- 耳植入器 (CI) 是严重到严重的听力损失的重要治疗方法.
- 了解植入后听力变化,包括迟发性听力损失 (doHL),对于患者管理至关重要.
- 电极阵列设计的变化可能会影响听力结果和设备性能.
研究的目的:
- 通过使用MED-EL和先进生物学 (AB) 侧壁电极阵列,研究耳植入后听觉敏感性变化.
- 描述迟发性听力损失 (doHL) 的发生率,程度和时间.
- 在患有doHL.HL的患者中检查并发电极阻抗变化.
主要方法:
- 对96名成年IC接受者的回顾性审查 (101只耳朵).
- 使用低频纯音调平均值 (LFPTA) 评估听力敏感性.
- 立即和延迟听力下降的分析,doHL特征和电极阻抗.
主要成果:
- 中位数即时听力损失为19 dB; 73%的人在激活时有功能性听力.
- 总体上,doHL的发病率为27% (76周的中位数是24dB损失),大多数病例是渐进的.
- 随着随访时间的延长,doHL的发病率增加了 (31%在1年,44%在2年);与3个AB接受者不同的是,没有任何有doHL的MED-EL接受者显示阻抗变化.
结论:
- 迟发性听力损失 (doHL) 发生的时间比以前报告的时间慢,较晚,而急性听力损失较少.
- 大多数耳植入器接收者在植入后保持功能性听力.
- 在具有doHL的MED-EL阵列接收器中缺乏阻抗变化与之前的发现一致.
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