摘要
目的 探讨畸变产物耳声发射（ＤＰＯＡＮ）鉴别诊断耳蜗性聋和耳蜗后性聋的意义。方法 采用ＩＬＯ９６耳动态分析仪对４９例耳蜗性聋和４例耳蜗后性聋进行ＤＰＯＡＥ测试。结果 耳蜗性聋组的ＤＰＯＡＥ图显示出ＤＰＯＡＥ幅值随纯音听阈的升高有不同程度的下降，并显示出很好的频率特异性。当纯音听阈＞５０ｄＢＨＬ时，ＤＰＯＡＥ消失。耳蜗后性聋组的ＤＰＯＡＥ图显示出的ＤＰＯＡＥ幅值变化不明显，仍在正常范围，与纯音听阈升高程度缺乏相对应关系。结论 ＤＰＯＡＥ是一种有效的辅助性鉴别诊断耳蜗性聋和耳蜗后性聋的方法。
Objective: To study the significance of differential diagnosis of distortion product otoacoustic emissions(DPOAE) in cochlear deafness and retrocochlear deafness. Methods Recording DPOAE in 49 cases of cochlear deafness and 4 cases of retrocochlear deafness with ILO 96 otodynamic analyzer. Results The results showed that DPOAE amplitude reduced with the increased level of pure tone auditory threshold in cochlear deafness group. When the level of pure tone auditory threshold >50 dBHL, DPOAE disappeared. The variation of DPOAE amplitude in retrocochlear deafness group, was not obvious, but still in normal range, and was not in correlation with the increasing level of pure tone auditory threshold. Conclusion DPOAE is an effective method to differentiate cochlear and retrocochlear deafness.
出处
《中国中西医结合耳鼻咽喉科杂志》
2001年第3期109-111,共3页
Chinese Journal of Otorhinolaryngology in Integrative Medicine
关键词
畸变产物耳声发射
耳蜗性聋
耳蜗后性聋
诊断
Distortion product otoacoustic emissions (DPOAE) Cochlear deafness Retrocochlear deafness
