Bauch C D, Olsen W O
Mayo Clinic, Rochester, Minn.
Audiology. 1988;27(3):156-63. doi: 10.3109/00206098809081586.
Average hearing thresholds for 2,000, 3,000 and 4,000 Hz and ABR results were analyzed for 290 patients having some degree of cochlear hearing loss. As average hearing sensitivity in the 2,000- to 4,000-Hz range became poorer, the incidence of abnormal auditory brainstem responses (ABR) increased. When the 2,000-Hz threshold sensitivity was 0-40 dB and the three-frequency average hearing loss was less than 50 dB, nearly 80% of ABR tracings were normal. Steeply sloping audiograms above 2,000 Hz increased the percent of abnormal ABR results.
对290例有一定程度耳蜗性听力损失的患者，分析了其2000Hz、3000Hz和4000Hz的平均听力阈值及听性脑干反应（ABR）结果。随着2000Hz至4000Hz范围内平均听力敏感度变差，异常听性脑干反应（ABR）的发生率增加。当2000Hz阈值敏感度为0至40dB且三频率平均听力损失小于50dB时，近80%的ABR描记图正常。2000Hz以上呈陡坡型听力图会增加ABR结果异常的百分比。
