Department of Otolaryngology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan.
Udaka ENT Clinic, Tokushima, Japan.
J Med Invest. 2020;67(1.2):131-138. doi: 10.2152/jmi.67.131.
The effects of FM system fitted into the normal hearing ear (NHE) or a cartilage conduction hearing aid (CCHA) fitted into the affected ear (AE) on the speech recognition ability in noise were examined in children with unilateral congenital aural atresia (UCAA). In children with bilateral normal hearing (BNH), speech recognition score (SRS) was significantly decreased in the noisy environment of -5 dB signal-to-noise ratio (SNR), compared with those in quiet. In children with UCAA, SRS was significantly decreased in noisy environments of 0 and -5 dB SNR, compared with those in quiet. In noisy environments of 0 and -5 dB SNR, SRS in children with UCAA was significantly decreased, compared those in children with BNH. In the noisy environment of -5 dB SNR, SRS in UCAA children aided by FM system fitted into NHE was significantly better than those in unaided children in the same group. In the noisy environment of 0 dB SNR, SRS in UCAA children aided by CCHA into AE tended to be higher than those in unaided children in the same group. FM system and CCHA can be recommended as an audiological management for the improvement of speech recognition in children with UCHL in classrooms. J. Med. Invest. 67 : 134-138, February, 2020.
研究单侧先天性外耳闭锁（UCAA）儿童在正常听力耳（NHE）中佩戴 FM 系统或在患耳（AE）中佩戴骨导助听器（CCHA）对噪声下言语识别能力的影响。在双侧听力正常（BNH）的儿童中，与安静环境相比，信噪比为-5dB 的嘈杂环境中言语识别评分（SRS）显著降低。在 UCAA 儿童中，与安静环境相比，信噪比为 0 和-5dB 的嘈杂环境中 SRS 显著降低。与 BNH 儿童相比，0 和-5dB SNR 噪声环境中 UCAA 儿童的 SRS 明显降低。在信噪比为-5dB 的嘈杂环境中，NHE 中佩戴 FM 系统的 UCAA 儿童的 SRS 明显优于同组未助听儿童。在 0dB SNR 的嘈杂环境中，AE 中佩戴 CCHA 的 UCAA 儿童的 SRS 较同组未助听儿童有升高趋势。FM 系统和 CCHA 可作为改善单侧先天性外耳闭锁儿童在教室中言语识别能力的听力学管理方法。J. Med. Invest. 67 : 134-138, February, 2020.
