Hof J R, Anteunis L J C, Chenault M N, van Dijk P
Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Maastricht, The Netherlands.
Int J Audiol. 2005 Jun;44(6):317-20. doi: 10.1080/14992020500057822.
Middle ear pathology has a negative effect on the detectability of otoacoustic emissions. In this study, we investigated the effect of compensating a deviant static middle ear pressure while measuring transient evoked otoacoustic emissions (TEOAEs). In 59 children (mean age 4 years, 5 months) TEOAEs were measured twice in one session: first at ambient pressure and than at compensated middle ear pressure. On average, TEOAE amplitudes increased by 1.9 dB as a result of middle ear pressure compensation. The amplitude increase was largest in frequency bands centred at 1 and 2 kHz and a statistically significant correlation was found between the amount of compensated pressure and the TEOAE amplitude increase. In the higher frequency bands centred at 3 and 4 kHz, TEOAE amplitudes were almost insensitive to pressure compensation. These results show that measuring OAEs at compensated middle ear pressure enhances the amplitude of TEOAEs, and thus improves the detectability.
中耳病理状况会对耳声发射的可检测性产生负面影响。在本研究中，我们调查了在测量瞬态诱发耳声发射（TEOAEs）时补偿异常静态中耳压力的效果。对59名儿童（平均年龄4岁5个月）在同一时段内进行了两次TEOAEs测量：首先在环境压力下测量，然后在补偿后的中耳压力下测量。平均而言，中耳压力补偿使TEOAE幅度增加了1.9 dB。在以1 kHz和2 kHz为中心的频带中，幅度增加最大，并且发现补偿压力量与TEOAE幅度增加之间存在统计学上的显著相关性。在以3 kHz和4 kHz为中心的较高频带中，TEOAE幅度对压力补偿几乎不敏感。这些结果表明，在补偿后的中耳压力下测量耳声发射可提高TEOAE的幅度，从而提高可检测性。
