Section of Otorhinolaryngology, Neurosciences Department, University of Padua, Padua, Italy.
Acta Otorhinolaryngol Ital. 2023 Jun;43(3):221-226. doi: 10.14639/0392-100X-N2271.
To assess the hearing benefit with a unilateral bone conduction hearing aid in a cohort of children with unilateral aural atresia.
Cross-sectional case series pilot study involving 7 children (median age: 10 years, range 6-11). All patients underwent pure-tone, speech, aided sound field and aided speech audiometry and Simplified Italian Matrix Test (SIMT) with and without bone conduction hearing aid (Baha 5 Cochlear). Cognitive abilities were assessed in 5 patients.
The mean air conduction pure-tone average (PTA) of the atretic ear was 63.2 ± 6.9 dB, while the bone conduction PTA was 12.6 ± 4.7 dB. Speech discrimination score of the atretic ear was 88.6 ± 3.8 dB, while with the hearing aid it was 52.8 ± 1.9 dB. In the contralateral ear, there was no significant air-bone gap, and PTAs for air and bone conduction thresholds were within normal range (PTA ≤ 25 dB). The mean aided air conduction hearing threshold was 26.2 ± 7.97. Mean speech recognition threshold without the hearing aid was -5.1 ± 1.9 dB, and -6.0 ± 1.7 dB with the hearing aid tested with the SIMT. The mean score of the cognitive test was 46.8 ± 42.8.
These preliminary findings should encourage clinicians in proposing a unilateral bone conduction hearing aid in children with unilateral atresia.
评估单侧骨导助听对单侧听小骨闭锁患儿的听力获益。
这是一项涉及 7 名儿童（中位年龄：10 岁，范围 6-11 岁）的横断面病例系列初步研究。所有患者均进行纯音、言语、助听声场和助听言语测听以及有无骨导助听（Baha 5 人工耳蜗）的简化意大利矩阵测试（SIMT）。5 名患者还进行了认知能力评估。
闭锁耳的气导纯音平均听阈（PTA）为 63.2 ± 6.9 dB，骨导 PTA 为 12.6 ± 4.7 dB。闭锁耳的言语辨别率为 88.6 ± 3.8 dB，而使用助听后为 52.8 ± 1.9 dB。对侧耳气骨导差无显著差异，气导和骨导听阈均在正常范围内（PTA ≤ 25 dB）。助听气导平均听阈为 26.2 ± 7.97。不使用助听时言语识别阈值的平均值为-5.1 ± 1.9 dB，使用助听时 SIMT 测试的平均值为-6.0 ± 1.7 dB。认知测试的平均得分为 46.8 ± 42.8。
这些初步发现应鼓励临床医生向单侧听小骨闭锁患儿推荐单侧骨导助听。
