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目的探讨耳蜗性聋伴耳鸣患者畸变产物耳声发射、纯音听阈、耳鸣频率三者之间的关系。方法 DPOAE以配对初始音诱发,使用两个初始纯音信号f1和f2(f1:f2=1.22,f2频率范围0.553～8.837kHz,L1=65dBSPL,L2=55dBSPL)测定常规频率(125Hz～8kHz)的纯音听阈,并进行耳鸣匹配测试。对三者之间两两分析。结果耳鸣频率与纯音听阈比较,耳鸣频率在4K、6K、8K的耳数为150耳,占总耳数的78.1%,听力损失最严重频率在4K、6K、8K的耳数为143耳,占总耳数的74.5%,耳鸣频率与听力下降频率具有一一对应关系的为72耳,占总耳数的37.5%,耳鸣频率与DPOAE比较,耳鸣频率在4K、6K、8K的耳数为150耳,占总耳数的78.1%,DP幅值最小频率在4416、6250、8837HZ的耳数为132耳,占总耳数的68.7%,耳鸣频率与DPOAEF2幅值下降频率具有一一对应关系的为41耳,占总耳数的21.3%,纯音听阈与DPOAE比较,听力损失最严重频率在4K、6K、8K的耳数为143耳,占总耳数的74.5%,DP幅值最小频率在4416、6250、8837HZ的耳数为132耳,占总耳数的68.7%,听力下降频率与DPOAEF2幅值下降频率具有一一对应关系的58耳,占总耳数的30.2%。结论耳鸣频率、听力损失最严重频率、DP幅值最小频率三者之间不存在一一对应关系。
Objective To investigate the relationship between distortion product otoacoustic emissions, pure tone hearing threshold and tinnitus frequency in patients with cochlear deafness and tinnitus. Method DPOAE was paired with an initial tone-induced, pure tone of 125 kHz ~ 8 kHz at regular frequency using two initial pure tone signals f1 and f2 (f1: f2 = 1.22, f2 frequency range 0.553-8.837 kHz, L1 = 65 dB SPL, L2 = 55 dB SPL) Hearing threshold, and tinnitus matching test. Pairwise analysis of the three. Results Tinnitus frequency compared with pure tone threshold, tinnitus frequency in 4K, 6K, 8K ear number is 150 ears, accounting for 78.1% of the total number of ears, the most severe hearing loss frequency in 4K, 6K, 8K ears 143 ears, accounting for 74.5% of the total number of ears, tinnitus frequency and hearing loss frequency has a one-to-one correspondence for the 72 ears, 37.5% of the total number of ears, tinnitus frequency compared with DPOAE, tinnitus frequency in 4K, 6K, 8K ear number 150 The ear, accounting for 78.1% of the total number of ears, the minimum amplitude of DP amplitude at 4416,6250,8837HZ ears 132 ears, accounting for 68.7% of the total number of ears, tinnitus frequency and DPOAEF2 amplitude decreased frequency of one-to-one correspondence 41 ears, accounting for 21.3% of the total number of ears, pure tone threshold compared with DPOAE, the most severe hearing loss frequency in 4K, 6K, 8K of 143 ears, accounting for 74.5% of the total number of ears, DP minimum frequency The ears of 4416,6250 and 8837HZ were 132 ears, accounting for 68.7% of the total ears. The frequency of hearing loss and the decreasing frequency of DPOAEF2 had 58 ears, accounting for 30.2% of the total ears. Conclusion There is no one-to-one correspondence between the tinnitus frequency, the most severe hearing loss frequency and the minimum DP amplitude frequency.