Nascimento Leandra Tabanez do, Bevilacqua Maria Cecília
Hospital de Reabilitação de Anomalias Craniofaciais, USP-Campus Bauru.
Braz J Otorhinolaryngol. 2005 Jul-Aug;71(4):432-8. doi: 10.1016/s1808-8694(15)31195-2. Epub 2005 Dec 15.
To evaluate the effects of different signal-to-noise ratios on speech recognition obtained by the use of cochlear implant (CI); to compare the speech recognition in noise with different types of multichannel cochlear implants (CIs) and to evaluate the degree of difficulty for speech understanding in noise in daily life situations.
Cohort transversal.
Forty adults with post-lingual hearing loss implanted with Nucleus 22, Nucleus 24, Combi 40, Combi 40+ and Clarion. We evaluated the recognition for CPA sentences in quiet and in S/N +15, +10 and +5 dB. We also applied the Social Hearing Handicap Index (SHHI) questionnaire for self-assessment in daily life.
All the implanted adults presented a significant reduction in the scores for sentences recognition as the S/N decreased. The medians' curve for sentence recognition reached 50% in the signal-to-noise ratio of +10 dB. There was no statistically significant difference in sentences' recognition scores and difficulty scores obtained with the SHHI, for all types of implants. The difficulties of implanted adults were rare in quiet and occasional in noisy situations according to SHHI questionnaire.
评估不同信噪比对于使用人工耳蜗（CI）所获得的言语识别的影响；比较不同类型多通道人工耳蜗（CI）在噪声环境中的言语识别情况，并评估在日常生活情境中噪声环境下言语理解的困难程度。
队列横断面研究。
40名植入了Nucleus 22、Nucleus 24、Combi 40、Combi 40+和Clarion人工耳蜗的成年后语言听力损失患者。我们评估了他们在安静环境以及信噪比分别为+15 dB、+10 dB和+5 dB时对听觉脑干反应（ABR）句子的识别情况。我们还应用了社会听力障碍指数（SHHI）问卷进行日常生活中的自我评估。
随着信噪比降低，所有植入人工耳蜗的成年人的句子识别得分均显著降低。句子识别的中位数曲线在信噪比为+10 dB时达到50%。对于所有类型的人工耳蜗，句子识别得分和通过SHHI获得的困难得分在统计学上没有显著差异。根据SHHI问卷，植入人工耳蜗的成年人在安静环境中困难很少，在噪声环境中偶尔会遇到困难。
