Prabhu Prashanth, Barman Animesh
a Department of Audiology , All India Institute of Speech and Hearing , Mysore , India.
Int J Audiol. 2017 Oct;56(10):759-766. doi: 10.1080/14992027.2017.1323123. Epub 2017 May 9.
The present study attempted to compare the aided benefit using low-cut modified amplification and channel-free hearing aids in individuals with auditory neuropathy spectrum disorder (ANSD). It was also attempted to determine these effects in good and poor performers with ANSD.
Cross-sectional within group pretest, post-test design.
Twenty-five individuals with acquired ANSD were selected for the study. The study sample included 11 males and 14 females between the age ranges of 17-40 years (mean age of 24.6 years).
The results of the repeated measures analysis of variance (ANOVA) showed that aided benefit was significantly higher with the channel-free hearing aid. Mixed ANOVA results showed that the improvement was more in good performers than poor performers with ANSD. Multiple regression analyses showed that speech identification scores are a strong predictor of aided benefit.
The results of the present study suggest that channel-free hearing aids and low-cut modified amplification can be used as an efficient alternative technique during hearing aid fitting for individuals with ANSD. However, further evidence-based studies on a larger group are essential to validate the results.
本研究旨在比较低切改良放大助听器和无通道助听器对听觉神经病谱系障碍（ANSD）患者的助听效果。同时，本研究还试图确定这些效果在ANSD表现良好者和表现不佳者中的差异。
组内横断面预测试、后测试设计。
选取25例获得性ANSD患者作为研究对象。研究样本包括11名男性和14名女性，年龄在17 - 40岁之间（平均年龄24.6岁）。
重复测量方差分析（ANOVA）结果显示，无通道助听器的助听效果显著更高。混合ANOVA结果显示，ANSD表现良好者的改善程度高于表现不佳者。多元回归分析表明，言语识别分数是助听效果的有力预测指标。
本研究结果表明，无通道助听器和低切改良放大技术可作为ANSD患者助听器验配过程中的一种有效替代技术。然而，需要对更大样本进行进一步的循证研究以验证这些结果。
