Abstract
For the study of noise induced hearing loss due to vibration, 68 patients with vibration syndrome (white wax disease) were examined by the audiometry, Bekesy tracing, SISI test and impedance audiometry. They did not show C5 dip in audiogram but C4, C5, C6 down slope pattern, and their hearing loss reached to maximum level within the first 6 years of their works with vibrating machines. And it was revealed that their hearing loss progressed only at the same rate as physical change after their forth decade. Therefore, it seemed less likely that vibration causes their hearing worse after their retirement.Their hearing loss was severer than that of workers under chronic noise only, so it was believed that vibration makes noise induced hearing loss severer. And there were several differences between chain saw labours (22 ears) and coal miners (83 ears) on their audiograms, and the hearing loss of the former showed severer than that of the latter. We speculated that this was caused by the differences of their tools and their circumstances in temperature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
