可接受噪声级测试在单、双耳佩戴助听器效果评估中的应用

The Use of Acceptable Noise Level on Monaural and Binaural Amplification in Hearing Aids Fitting

杨毅;王枫;谭梦喜;

1:浙江中医药大学医学技术学院

摘要
目的通过比较双侧中重度听力损失患者在单、双耳助听下的可接受噪声级(acceptable noise level,ANL),探讨ANL对助听器验配及预测助听效果的作用。方法选取15例双侧中重度听力损失患者,分别测得双耳未助听、左耳助听、右耳助听和双耳助听状态下的最舒适响度级(most comfortable levels,MCL)、最大背景噪声级(background noise level,BNL),并计算得到ANL值(ANL=MCL-BNL),对结果进行统计学分析。结果 15例受试者双耳未助听、左耳助听、右耳助听及双耳助听四种状态下测得的ANL值分别为18.87±5.26、12.60±2.47、12.00±2.90、5.13±1.25dB S/N;MCL值分别为80.40±9.28、63.73±5.15、62.27±5.36、61.80±6.05dB HL;BNL值分别为61.67±6.14、51.13±3.94、50.27±4.50、56.67±5.16dB HL;左耳助听与右耳助听下的ANL值差异无统计学意义(P>0.05);单、双耳助听下与未助听的ANL值差异均具有统计学意义(P<0.05);双耳助听状态下ANL值显著低于单耳助听(P<0.05)。结论 ANL值较低耳更利于助听器验配,佩戴助听器能有效提高听障患者对噪声的接受能力,并且双耳佩戴助听器的效果明显优于单耳。
关键词
可接受噪声级;最舒适响度级;最大背景噪声级;助听器
基金项目(Foundation):
作者
杨毅;王枫;谭梦喜;
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