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首页> 美国卫生研究院文献>The Scientific World Journal >Effect of Workplace Noise on Hearing Ability in Tile and Ceramic Industry Workers in Iran: A 2-Year Follow-Up Study
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Effect of Workplace Noise on Hearing Ability in Tile and Ceramic Industry Workers in Iran: A 2-Year Follow-Up Study

机译：工作场所噪声对伊朗瓷砖和陶瓷行业工人听力能力的影响：一项为期两年的跟踪研究

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Introduction. Noise as a common physical hazard may lead to noise-induced hearing loss, an irreversible but preventable disorder. Annual audiometric evaluations help detect changes in hearing status before clinically significant hearing loss develops. This study was designed to track hearing threshold changes during 2-year follow-up among tile and ceramic workers. Methods. This follow-up study was conducted on 555 workers (totally 1110 ears). Subjects were divided into four groups according to the level of noise exposure. Hearing threshold in conventional audiometric frequencies was measured and standard threshold shift was calculated for each ear. Results. Hearing threshold was increased during 2 years of follow-up. Increased hearing threshold was most frequently observed at 4000, 6000, and 3000 Hz. Standard threshold shift was observed in 13 (2.34%), 49 (8.83%), 22 (3.96%), and 63 (11.35%) subjects in the first and second years of follow-up in the right and left ears, respectively. Conclusions. This study has documented a high incidence of noise-induced hearing loss in tile and ceramic workers that would put stress on the importance of using hearing protection devices.
机译：介绍。噪音是一种常见的身体危害，可能导致噪音引起的听力损失，这是一种不可逆但可预防的疾病。年度听力测验评估有助于在临床上明显的听力损失发生之前检测听力状态的变化。这项研究旨在追踪瓷砖和陶瓷工人两年随访期间的听力阈值变化。方法。这项后续研究是针对555名工人（总共1110耳）进行的。根据噪声暴露水平将受试者分为四组。测量常规听力测验频率中的听力阈值，并为每只耳朵计算标准阈值偏移。结果。在随访的2年中，听力阈值增加。在4000、6000和3000 Hz下最常观察到听力阈值升高。在右耳和左耳随访的第一年和第二年，分别在13位（2.34％），49位（8.83％），22位（3.96％）和63位（11.35％）受试者中观察到标准阈值变化。结论。这项研究表明，瓷砖和陶瓷工人中噪声引起的听力损失的发生率很高，这将使人们更加重视使用听力保护装置的重要性。

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