Hol Myrthe K S, Cremers Cor W R J, Coppens-Schellekens Wilma, Snik Ad F M
Department of Otorhinolaryngology, Radboud University Medical Centre Nijmegen, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
Int J Pediatr Otorhinolaryngol. 2005 Jul;69(7):973-80. doi: 10.1016/j.ijporl.2005.02.010. Epub 2005 Mar 24.
To evaluate the validity of a bone-anchored hearing aid (BAHA) Softband (fitted unilaterally and bilaterally) in young children with bilateral congenital aural atresia.
Two children with severe bilateral congenital conductive hearing loss, who had been fitted with a transcutaneous BAHA Softband at the age of 3 and 28 months, respectively. The latter child had been fitted with a conventional bone-conduction hearing aid at the age of 3 months; at 28 months, this child had received the BAHA Softband and after 5 months of unilateral application, the BAHA Softband was fitted bilaterally. Follow-up in the two children was 31 and 17 months, respectively.
Using the artificial mastoid, gain and maximum output were studied in this new transcutaneous application of the BAHA, with the BAHA Classic and the BAHA Compact as sound processor. Results were compared to those obtained with a conventional bone-conduction device (Oticon E 300 P). Aided thresholds and sound lateralization scores were assessed with double visual reinforcement audiometry (VRA). To test the validity of the BAHA Softband, the speech and language development of the children was assessed by means of age-appropriate tests (the preverbal Symbolic play test and the Dutch non-speech test for receptive and expressive language and the Dutch version of the Reynell language test).
The electro-acoustic measurements showed minor differences in gain between the three devices. At a reduced volume setting, the mean input level at which the output levelled off was largely comparable between the BAHA Classic and the conventional device, but somewhat poorer with the BAHA Compact. Both children showed speech and language development that was in accordance with their cognitive development.
The BAHA Softband was a valid intervention in children with congenital bilateral aural atresia who were too young for percutaneous BAHA application.
评估骨锚式助听器（BAHA）软带（单侧和双侧佩戴）在双侧先天性耳道闭锁幼儿中的有效性。
两名双侧先天性重度传导性听力损失儿童，分别在3个月和28个月时佩戴了经皮BAHA软带。后一名儿童在3个月时佩戴了传统骨传导助听器；28个月时，该儿童佩戴了BAHA软带，单侧佩戴5个月后改为双侧佩戴。两名儿童的随访时间分别为31个月和17个月。
使用人工乳突，以BAHA Classic和BAHA Compact作为声音处理器，对这种新的经皮BAHA应用中的增益和最大输出进行研究。将结果与传统骨传导装置（奥迪康E 300 P）获得的结果进行比较。采用双视觉强化听力测试（VRA）评估助听阈值和声音定位分数。为了测试BAHA软带的有效性，通过适合年龄的测试（言语前象征性游戏测试、荷兰语接受性和表达性语言非言语测试以及荷兰版雷诺尔语言测试）评估儿童的言语和语言发育情况。
电声测量显示三种装置之间的增益差异较小。在音量降低的设置下，BAHA Classic和传统装置输出趋于平稳时的平均输入水平大致相当，但BAHA Compact稍差。两名儿童的言语和语言发育均与其认知发育相符。
对于因年龄太小而无法经皮应用BAHA的双侧先天性耳道闭锁儿童，BAHA软带是一种有效的干预措施。
