【摘要】 目的:通过分析不同聋儿的短声ABR"V"波的潜伏期-强度函数(LIF)存在较大差异的原因,探讨依据LIF来预测听力图构型的可能性。方法:按照LIF数值的大小将其分为改变明显组和不明显组,并分别测试这些聋儿的短纯音ABR,根据短纯音ABR的结果来分析短声"V"波LIF出现差异的原因;同时记录正常幼儿组的结果作为对照。结果:明显组和不明显组的LIF值分别为(56.00±21.81)μs/dB和(16.53±6.73)μs/dB;他们的短纯音ABR 0.5~4.0kHz 4个测试频率的阈值分别为(65.00±7.32)、(68.13±6.55)、(70.63±6.80)、(78.12±8.34)dB和(93.13±7.04)、(79.37±7.72)、(69.38±8.54)、(66.25±8.06)dB。结论:聋儿短声ABR"V"的LIF数值较大者均为平坦或下降型听力损失,而较小者均为上升型听力损失,在1.0kHz尤其0.5kHz处听力明显比高频听力差。因此可以根据聋儿短声ABR"V"波LIF的大小来预测其听力图构型。更多还原

【Abstract】 Objective:The latency-intensity function(LIF)of wave V from click ABR of some deaf children showed great variation.We attempted to find out the intrinsic reasons.Method:The children recieved tone-burst ABR test.Result:Frequencies from 0.5-4.0kHz have been tested and the thresholds of tone-burst ABR were recorded.The average thresholds of steeply LIF children at 0.5-4.0kHz were(93.13±7.04),(79.37±7.72),(69.38±8.54),(66.25±8.06)dB respectively,while the average thresholds of shallower LIF children at these 4frequencies were(65.00±7.32),(68.13±6.55),(70.63±6.80),(78.12±8.34)dB respectively.Conclusion:The results imply that the child with steeply LIF may have more hearing loss at frequencies 0.5and 1kHz than those with shallower LIF.LIF may predict the audiogram configuration.更多还原