PDF(Pubmed)
Abstract：
Background: In cochlear implant (CI) treatment, there is a large variability in outcome. The aim of our study was to identify the independent audiometric measures that are most directly relevant for describing this variability in outcome characteristics of CI recipients. An extended audiometric test battery was used with selected adult patients in order to characterize the full range of CI outcomes. Methods: CI users were recruited for this study on the basis of their postoperative results and divided into three groups: low (1st quartile), moderate (medium decentile), and high hearing performance (4th quartile). Speech recognition was measured in quiet by using (i) monosyllabic words (40-80 dB SPL), (ii) speech reception threshold (SRT) for numbers, and (iii) the German matrix test in noise. In order to reconstruct demanding everyday listening situations in the clinic, the temporal characteristics of the background noise and the spatial arrangements of the signal sources were varied for tests in noise. In addition, a survey was conducted using the Speech, Spatial, and Qualities (SSQ) questionnaire and the Listening Effort (LE) questionnaire. Results: Fifteen subjects per group were examined (total N = 45), who did not differ significantly in terms of age, time after CI surgery, or CI use behavior. The groups differed mainly in the results of speech audiometry. For speech recognition, significant differences were found between the three groups for the monosyllabic tests in quiet and for the sentences in stationary (S0°N0°) and fluctuating (S0°NCI) noise. Word comprehension and sentence comprehension in quiet were both strongly correlated with the SRT in noise. This observation was also confirmed by a factor analysis. No significant differences were found between the three groups for the SSQ questionnaire and the LE questionnaire results. The results of the factor analysis indicate that speech recognition in noise provides information highly comparable to information from speech intelligibility in quiet. Conclusions: The factor analysis highlighted three components describing the postoperative outcome of CI patients. These were (i) the audiometrically measured supra-threshold speech recognition and (ii) near-threshold audibility, as well as (iii) the subjective assessment of the relationship to real life as determined by the questionnaires. These parameters appear well suited to setting up a framework for a test battery to assess CI outcomes.
摘要：
背景：在人工耳蜗（CI）治疗中，结果有很大的可变性。我们研究的目的是确定与描述CI接受者结局特征的这种变异性最直接相关的独立听力测量。对选定的成年患者使用扩展的听力测量测试电池，以表征CI结果的全部范围。方法：根据术后结果招募CI使用者，将其分为三组：低（第1四分位数），中等(中小数),和高听力性能（第四四分位数）。通过使用（i）单音节单词（40-80dBSPL）在安静中测量语音识别，（ii）数字的语音接收阈值（SRT），和(Iii)德国矩阵噪声测试。为了在诊所重建苛刻的日常听力情况，背景噪声的时间特征和信号源的空间排列变化，以进行噪声测试。此外,使用演讲进行了一项调查，Spatial,和质量(SSQ)问卷和倾听努力(LE)问卷。结果：每组15名受试者（总N=45），在年龄方面没有显着差异，CI手术后的时间，orCI使用行为。两组主要在言语测听结果上有所不同。对于语音识别，在安静的单音节测试和静止（S0°N0°）和波动（S0°NCI）噪声中的句子之间，三组之间存在显着差异。安静中的单词理解和句子理解都与噪声中的SRT密切相关。该观察结果也通过因素分析得到证实。对于SSQ问卷和LE问卷结果，三组之间没有发现显着差异。因子分析的结果表明，噪声中的语音识别提供的信息与安静中语音清晰度的信息具有高度可比性。结论：因素分析强调了描述CI患者术后结局的三个组成部分。这些是（i）听力测量的超阈值语音识别和（ii）近阈值可听度，以及（iii）问卷调查确定的对与现实生活的关系的主观评估。这些参数似乎非常适合为测试电池建立框架以评估CI结果。
