瞬态耳声发射的主频对梅尼埃病的诊断价值

Diagnostic Value of Main Frequency of Transient Evoked Otoacoustic Emissions in Meniere's Disease

为探讨检测TEOAE的主频对诊断梅尼埃病的应用价值,本研究用ILO 88测试系统以click声为刺激信号,对正常耳和梅尼埃病耳作瞬态耳声发射(TEOAE)检测,观察其主频范围.发现正常耳的主频集中在1.2～l.6kHz之间,梅尼埃病主频集中在0.8～1.1kHz之间,正常耳的主频明显高于梅尼埃耳的主频.梅尼埃病人服用甘油后,TEOAE主频发生变化,由低频转为高频,未引出耳声发射耳,服用甘油后耳声反射引出.以上结果提示,检测TEOAE的主频对梅尼埃病的诊断有一定意义.

The purpose of this study was to assess the diagnostic value of main frequency of transient evoked otoacoustic emissions for Meniere's disease. The click- evoked transient otoacoustic emissions(TEOAE) in normal subjects and in patients with Meniere' s disease were examined using ILO 88 otodynamic analyzer system to observe the main frequency distrbution. The main frequeencies ranged from 1.2 to 1.6 kHz in normal ears, and from 0.8 to 1. 1 kHz in Meniere' s ears. The main frequency range of normal ears was obviously higher than that in Meniere's ears. After application of glycerol, the main frequencies in some Meniere's ears were shifted from relative low frequency range to relative high frequency range. TEOAE appeared in some Meniere's ears in which TEOAEs could not be evoked before application of glycerol. The results suggest that the TEOAE can be used in the diagnosis of Meniere's disease.