Song James E, Tanaka Sara M, Pinto Jayant M, Rasmussen Beth, Ferro Lia M, Saadia-Redleaf Miriam I
University of Illinois Eye and Ear Infirmary Chicago, Illinois, USA.
Ann Otol Rhinol Laryngol. 2011 May;120(5):314-9. doi: 10.1177/000348941112000506.
The purpose of this study was to retrospectively examine how monaurally fitted hearing aids affected word recognition scores in patients with bilateral symmetric sensorineural hearing loss.
Sixty-six patients from 2 separate institutions were included in this study. In addition to having bilateral symmetric sensorineural hearing loss due to presbycusis, each patient had to have worn a single hearing aid for at least 5 months and have valid pre-aid and post-aid audiograms. Word recognition scores were analyzed with a table of confidence levels generated by Thornton and Raffin that determined the probability of differences between word recognition scores.
Hearing aids did not improve or preserve word recognition scores to the degree that has been previously reported in the literature. The unaided (control) ear demonstrated a decrease in word recognition scores over time, as was expected from previous studies. The aided ears demonstrated a similar decline in word recognition scores when compared to the unaided ears. When the conventional confidence level of 0.05 was used, the aided ears showed no advantage over the unaided (control) ears.
These findings are not consistent with the acclimatization first reported by Silman et al in 1993. Such a discrepancy in the results calls for further studies to evaluate just how effective unilateral hearing aids are in patients with bilateral symmetric sensorineural hearing loss.
本研究的目的是回顾性研究单侧佩戴助听器对双侧对称性感音神经性听力损失患者的单词识别分数有何影响。
本研究纳入了来自2个不同机构的66名患者。除了患有因老年性聋导致的双侧对称性感音神经性听力损失外，每位患者必须已佩戴单耳助听器至少5个月，且有有效的助听前和助听后听力图。使用由桑顿和拉芬生成的置信水平表分析单词识别分数，该表确定了单词识别分数之间差异的概率。
助听器并未如先前文献报道的那样提高或保持单词识别分数。正如先前研究所预期的，未佩戴助听器（对照）的耳朵随着时间推移单词识别分数下降。与未佩戴助听器的耳朵相比，佩戴助听器的耳朵在单词识别分数上也出现了类似的下降。当使用传统的0.05置信水平时，佩戴助听器的耳朵与未佩戴助听器（对照）的耳朵相比没有优势。
这些发现与1993年西尔曼等人首次报道的适应性情况不一致。结果中的这种差异需要进一步研究，以评估单侧助听器对双侧对称性感音神经性听力损失患者的实际效果。
