[海贝壳佩戴式骨传导仪器C.A.I. BC811的首次听力学结果]

[First audiological results of the concha-worn bone conduction instrument C.A.I. BC811].

作者信息

Giere T, Busch S, Lenarz T, Maier H

机构信息

Klinik für Hals-, Nasen- und Ohrenheilkunde, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland.

出版信息

HNO. 2015 Jan;63(1):50-5. doi: 10.1007/s00106-014-2875-8.

DOI:10.1007/s00106-014-2875-8

PMID:25008271

Abstract

BACKGROUND

Diverse forms of bone conduction devices (BCD; percutaneous or transcutaneous) provide successful and well-established therapies for conductional hearing loss (CHL). For patients in whom a surgical procedure is to be avoided for medical or personal reasons, instruments with head straps or bands, and bone conduction glasses are available. The current article presents and examines the audiological results of a newly developed, nonsurgical bone conducting device (C.A.I. BC811, bruckhoff hannover; C.A.I: Concha Anchored Instrument) that is fixed in the concha and transfers the sound to the cheekbone.

METHODS

In this cross-over study, 4 CHL patients with minimal sensorineural components and existing treatment with a BCD were supplied with a BC811. Audiological outcomes with the optimized existing device and the BC811 were evaluated and compared at 2-weekly intervals. In addition to the aided versus unaided sound field thresholds, the monosyllabic Freiburg intelligibility test, hearing in noise (OlSa) and the subjective benefit of the treatment (APHAB questionnaire) were investigated.

RESULTS

No significant differences between BC811 and the optimized existing devices were found in terms of aided thresholds in sound field, functional gain or monosyllabic intelligibility tests. The average aided improvement of the threshold was PTA4 = 29.4 ± 11.1 dB (mean ± standard deviation) with the BC811. The improvements in the monosyllabic intelligibility and hearing in noise tests were significant for both types of device and comparison between the device types revealed no significant differences. The subjective ratings of the perceived improvement reflected by the global APHAB score were positive and similar: 36.4 (control) and 33.4 (BC811).

CONCLUSION

The comparison with BCDs demonstrated that the BC811 is a realistic and audiologically sufficient alternative to surgical solutions using percutaneous devices for patients with CHL.

摘要

背景

多种形式的骨传导装置（BCD；经皮或经皮穿剌式）为传导性听力损失（CHL）提供了成功且成熟的治疗方法。对于因医学或个人原因需避免手术的患者，有带头戴或头带的器械以及骨传导眼镜可供选择。本文介绍并研究了一种新开发的非手术骨传导装置（C.A.I. BC811，bruckhoff hannover；C.A.I：耳甲固定器械）的听力学结果，该装置固定于耳甲并将声音传递至颧骨。

方法

在这项交叉研究中，为4名具有最小感音神经性成分且已使用BCD进行治疗的CHL患者提供了BC811。每隔两周评估并比较优化后的现有装置和BC811的听力学结果。除了助听与无助听声场阈值外，还研究了单音节弗莱堡清晰度测试、噪声环境下的听力（OlSa）以及治疗的主观益处（APHAB问卷）。

结果

在声场助听阈值、功能增益或单音节清晰度测试方面，未发现BC811与优化后的现有装置之间存在显著差异。使用BC811时，阈值的平均助听改善为PTA4 = 29.4±11.1 dB（平均值±标准差）。两种装置在单音节清晰度和噪声环境下听力测试中的改善均显著，且装置类型之间的比较未显示出显著差异。全球APHAB评分所反映的主观改善评分呈阳性且相似：36.4（对照）和33.4（BC811）。