da Cruz M J, Fagan P, Atlas M, McNeill C
Department of Otolaryngology, St. Vincent's Hospital, Sydney, Australia.
Otolaryngol Head Neck Surg. 1997 Nov;117(5):555-8. doi: 10.1016/s0194-5998(97)70030-5.
The reversible hearing loss in the nonoperated ear noted by patients after ear surgery remains unexplained. This study proposes that this hearing loss is caused by drill noise conducted to the nonoperated ear by vibrations of the intact skull. This noise exposure results in dysfunction of the outer hair cells, which may produce a temporary hearing loss. Estimations of outer hair cell function in the nonoperated ear were made by recording the change in amplitude of the distortion-product otoacoustic emissions before and during ear surgery. Reversible drill-related outer hair cell dysfunction was seen in 2 of 12 cases. The changes in outer hair cell function and their clinical implications are discussed.
患者耳部手术后非手术耳出现的可逆性听力损失原因不明。本研究提出，这种听力损失是由完整颅骨的振动将钻孔噪声传导至非手术耳所致。这种噪声暴露会导致外毛细胞功能障碍，进而可能产生暂时性听力损失。通过记录耳部手术前和手术过程中畸变产物耳声发射幅度的变化，对非手术耳的外毛细胞功能进行了评估。12例中有2例出现了与钻孔相关的可逆性外毛细胞功能障碍。本文讨论了外毛细胞功能的变化及其临床意义。
