Löppönen H, Sorri M, Bloigu R
Department of Otolaryngology, University of Oulu, Finland.
Scand Audiol. 1991;20(3):181-9. doi: 10.3109/01050399109074951.
208 subjects representing both sexes and five age groups (15-70 years) were examined to obtain age-related threshold values for high-frequency (HF) electric bone-conduction (EBC) audiometry. The measurements also included conventional pure-tone audiometry and air-conduction (AC) HF (8-18 kHz) audiometry. The measured EBC thresholds were comparable to the values obtained with AC audiometers, and were equal to ISO standards at the frequencies of 0.5-6 kHz. The 15- and 20-year-old groups' EBC thresholds at 8 kHz were equivalent to thresholds of 15-year-old people from a cross-sectional material in Northern Finland. Thresholds deteriorated as a function of age, particularly in the HF range. The males had poorer thresholds than the females, especially in the age groups of 40 and 60 years. This could be attributed mainly to their greater noise exposure. The EBC method is quite practical and reliable for routine clinical measurements, but the dynamic range of the audiometer limits its use to relatively young subjects.
对208名涵盖男女两性以及五个年龄组（15至70岁）的受试者进行了检查，以获取高频（HF）电骨传导（EBC）听力测定的年龄相关阈值。测量还包括传统纯音听力测定和气导（AC）高频（8至18千赫）听力测定。测得的EBC阈值与AC听力计获得的值相当，并且在0.5至6千赫的频率上等于ISO标准。15岁和20岁年龄组在8千赫时的EBC阈值与芬兰北部横断面材料中15岁人群的阈值相当。阈值随年龄增长而恶化，尤其是在高频范围内。男性的阈值比女性差，特别是在40岁和60岁年龄组。这主要可归因于他们更多的噪声暴露。EBC方法对于常规临床测量相当实用且可靠，但听力计的动态范围限制了其仅适用于相对年轻的受试者。
