正常青年人常用频率及延伸高频声场测试的比较研究

A Comparison Study in the Normal Youth Between High-Frequency Audiometry (HFA) and Conventional-Frequency Audiometry(CFA)

目的 探讨和比较正常青年人常用频率 (12 5Hz～ 8kHz)与延伸高频 (9～ 16kHz)声场 (啭音 )听阈测试结果的不同特点 ,为延伸高频声场测试的临床应用提供参考依据。方法 对一组听力正常青年人 (男 5 2人 ,女48人 )行常用频率及延伸高频声场 (啭音 )听阈测试 ,并对结果进行统计学处理。结果 听力正常青年男女间声场(啭音 )延伸高频平均听阈 (HFA)、常用频率平均听阈 (CFA)和言语频率平均听阈 (SFA)无显著差异 (P >0 .0 5 )。测试样本各频率间平均听阈的比较显示 ,延伸高频的测听阈值随着频率的提高而增大。延伸高频平均听阈 (HFA)、常用频率平均听阈 (CFA)和言语频率平均听阈 (SFA)分别为 17.60 3 1± 6.8679;8.90 62± 2 .5 82 9;5 .80 0 0± 3 .2 2 62 ,相互比较显示 ,前者显著高于后二者 (P <0 .0 1) ,并呈显著的正相关 (P <0 .0 5 )。结论 延伸高频听阈对常用频率听阈、语言频率听阈损失具有一定的早期预示作用 ,但在临床应用延伸高频声场 (啭音 )的听力测试来评估听力损害时 。

Objective To investigate the different characters between conventional frequency audiometry (125 Hz～8 kKHz) and high frequency audiometry (9～16 kHz)in the normal youth and provide the references for the clinical application of the HFA.Methods 52 male and 48 female normal-hearing subjects were tested with both conventional-frequency (0.25～8 kHz) and high-frequency (10～18 kHz) audiometry.Results Data showed that no difference between male and female in different frequencies. However, the threshold of HFA went up gradually with the frequency increasing. The average threshold of HFA was significantly higher than that of CFA and speech frequency (SFA) and had a positive correlation with both CFA and SFA. Conclusion The results of this study suggest that HFA might be used as an early indicator for CFA and SFA hearing loss resulting from acoustic trauma, ototoxicity and presbycusis.