GBZ 49-2014 Translated English of Chinese Standard. GBZ49-2014: Diagnosis of occupational noise-induced deafness [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2018. 1. 26. - 9ÆäÀÌÁö This Standard specifies the diagnostic principles, diagnostic grading and treatment principles of occupational noise-induced deafness. This Standard applies to the diagnosis and treatment of hearing loss caused by long term occupational exposure to noise. |
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3 | |
Scope | 4 |
Diagnostic principles | 5 |
Annex A informative Instructions for using this Standard correctly | 6 |
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000 Hz threshold 7582 see Table according to GB/T Acoustics air conduction threshold audiometer audiometry weighted value auditory BHFTA binaural high-frequency mean bone conduction threshold carry out diagnostic Center for Disease characteristics of occupational conduction threshold audiometry Control and Prevention decibels dB diagnosis of occupational diagnostic evaluation according diagnostic grading Disease Control equation A.1 exaggerated hearing loss F M F false deafness frequency hearing loss high frequency high-frequency 3 000 high-frequency mean threshold Hospital for Occupational Hz threshold audiometry limits for hazardous maximum output value mean threshold audiometry mixed deafness moderate noise-induced monaural threshold audiometry noise workplace noise-induced hearing loss occupational noise occupational noise-induced deafness Prevention and Treatment Pure tone air pure tone threshold pure-tone audiometry results sensorineural deafness Shanghai speech frequency hearing Standard correctly Table A.1 threshold audiometry complies Threshold audiometry shift threshold audiometry test threshold audiometry weighted threshold deviation tone air conduction tone threshold audiometry Zhang