Wang Haitao, Jiang Chaoqiang, Zhou Feng, Wu Ping, Zhang Shaobin, Liu Weiwei, Huang Yile
Department of Audiology, Hospital of Otolaryngology-Head and Neck Surgery, Guangzhou, 510620, China.
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2004 Apr;18(4):209-11.
To study the feasibility and clinical values of occupational noise-induced hearing loss measured, evaluated and diagnosed with transient evoked otoacoustic emissions (TEOAE).
Pure tone threshold and TEOAE were performed in 11 (22 ears) young adults with normal hearing of control group and 90 (180 ears) noise exposure workers of test group. According to length of noise exposure time, test group was disparted to test 1,2,3 groups. Stimulated tone of TEOAE is non-linearity click of 80 dB SPL.
In test group and test 1,2,3 group against control, pure tone threshold in all frequency increased significantly, and correlation, strength and SNR of TEOAE in overall and every frequency declined significantly (P<0.05 or P<0.01). To observe test 1,2,3 group, It was found that pure tone threshold in all frequency increased and correlation, strength and SNR of TEOAE in overall and every frequency declined, when length of noise exposure time is increased. In 2.50-3.50 and 3.50-4.50 kHz, measuring values of TEOAE declined most significantly.
Occupational noise-induced hearing loss can been measured and diagnosed significantly with TEOAE. The best observed contents is correlation, strength and SNR of TEOAE in overall and every part frequency. The best sensitivity observed frequency parts of TEOAE is 2.50-3.50 and 3.50-4.50 kHz.
探讨瞬态诱发耳声发射（TEOAE）检测、评估及诊断职业性噪声性听力损失的可行性及临床价值。
对11名（22耳）听力正常的对照组青年成人及90名（180耳）噪声暴露工人进行纯音听阈及TEOAE检测。根据噪声暴露时间长短，将试验组分为试验1、2、3组。TEOAE的刺激音为80dB SPL的非线性短声。
试验组及试验1、2、3组与对照组相比，各频率纯音听阈均显著升高，TEOAE的总体及各频率相关性、强度及信噪比均显著下降（P<0.05或P<0.01）。观察试验1、2、3组发现，随着噪声暴露时间延长，各频率纯音听阈升高，TEOAE的总体及各频率相关性、强度及信噪比下降。在2.50 - 3.50kHz及3.50 - 4.50kHz，TEOAE测量值下降最为显著。
TEOAE可对职业性噪声性听力损失进行有效检测及诊断。最佳观察指标为TEOAE的总体及各频率相关性、强度及信噪比。TEOAE最佳敏感观察频率部位为2.50 - 3.50kHz及3.50 - 4.50kHz。
