先天性语前聋中国儿童双耳人工耳蜗植入疗效观察

目的：评估双侧耳人工耳蜗植入对极重度感音神经性语前聋患儿的听觉与言语康复疗效。方法：2例先天性极重度感音神经性聋儿童，单侧耳人工耳蜗植入术后2年和3年分别施行对侧耳人工耳蜗植入。术后1年评估患儿左、右耳单耳及双耳人工耳蜗助听听阈和言语识别率。以及言语清晰度。结果：①双耳人工耳蜗助听与单耳人工耳蜗助听相比。平均听阈降低分别为13dB和11dB；②在安静环境中双耳人工耳蜗植入儿童的言语识别率(开放项列)分别平均提高为9％和10％，2例双耳人工耳蜗植入儿童的言语识别率(开放项列)分别达97％和95％；③在嘈杂环境中对言语的识别能力明显提高；④言语清晰度有明显改善。结论：双耳人工耳蜗植入可明显提高极重度感音神经性语前聋患儿在安静和噪声环境下的言语识别率，对语前聋儿童的言语和语言发育有明显的帮助。

Benefit of bilateral cochlear implantation on congenital prelingually deafened Chinese-speaking children

OBJECTIVE: To evaluate the benefit of bilateral cochlear implants (BCIs) in prelingually deafened children on hearing rehabilitation as well as on speech and language development. METHOD: Two cases of congenital profound deaf children, who received unilateral cochlear implantation (CI, MEDEL C40+) on the age of 2 and 7.5, respectively, were performed secondary CI in the contralateral ear on their age of 5 and 9.5, respectively. One year after the secondary CI, the cochlear implant aided hearing threshold and speech discrimination rate were tested for both ears separately and together. The pronounce/speech distinct rate of the BCIs users were evaluated by their parents, surgeon and audiologist. RESULT: In comparison to unilateral aided ear, the mean hearing threshold at the frequency 250-4,000 Hz of the 2 cases with BCIs decreased by 13 dB and 11 dB, respectively. The speech discrimination rate of the BCIs users increased by 9% and 10%, respectively. The speech recognition in noise was improved. And their pronounce/speech distinct was improved. CONCLUSION: BCIs can provide a significant benefit in hearing, speech understanding, language development and pronounce/speech rehabilitation for prelingually deafened children.