Department of Otorhinolaryngology, Head and Neck Surgery, Radboud University Nijmegen Medical Centre, 9101, 6500 HB Nijmegen, The Netherlands.
Eur Arch Otorhinolaryngol. 2010 Jun;267(6):889-96. doi: 10.1007/s00405-009-1147-9. Epub 2009 Nov 11.
The objective of the present pilot study is to evaluate the effectiveness of three conventional contralateral routing of sound (CROS) hearing aids in adults with unilateral inner ear deafness. The study included tertiary referral center. Ten patients with unilateral inner ear deafness and normal hearing in the contralateral ear were selected to evaluate three different methods of amplification: the CROS hearing aid, the completely in the canal hearing aid and the bone-anchored hearing aid CROS (BAHA). Each of the three hearing aids was tried in a random order for a period of 8 weeks. Audiometric performance, including speech-in-noise, directional hearing and subjective benefit were measured after each trial period, using the APHAB, SSQ and single-sided deafness questionnaire. Sound localization performance was essentially at chance level in all four conditions. Mixed results were seen on the other patient outcome measures that alternated in favor of one of the three CROS devices. After the trial, three patients chose to be fitted with the BAHA CROS and one with the conventional CROS. In conclusion, most of the patients experienced some degree of benefit with each of the three hearing aids. Preference for one of the three hearing aids was independent of the order in which they were tried. It would be worthwhile to formulate selection criteria; still, we recommend that all patients with unilateral inner ear deafness should be offered a trial with at least the BAHA CROS.
本研究旨在评估三种传统的对侧声音转导（CROS）助听器在单侧内耳聋患者中的有效性。该研究纳入了一家三级转诊中心。选择了 10 名单侧内耳聋和对侧耳听力正常的患者，评估三种不同放大方法的效果：CROS 助听器、完全耳道式助听器和骨锚式助听器 CROS（BAHA）。每种助听器均以随机顺序试用 8 周。在每个试用阶段后，使用 APHAB、SSQ 和单侧耳聋问卷测量听力表现，包括噪声下言语、定向听力和主观获益。在所有四种情况下，声音定位性能基本都处于随机水平。其他患者结局测量指标的结果则混合，交替有利于三种 CROS 设备中的一种。试用后，有 3 名患者选择了 BAHA CROS，1 名选择了传统 CROS。总之，大多数患者在三种助听器中都有不同程度的获益。对三种助听器之一的偏好与试用顺序无关。制定选择标准是值得的，但我们建议应向所有单侧内耳聋患者提供 BAHA CROS 的试用。
