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題名 | 鐵路旁學校師生之聽力研究=Hearing Evaluation of Students and Teachers in an Elementary School Beside a Railroad |
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作者 | 陳建發; 李易倉; 李明儒; 鄒錫斌; | 書刊名 | 中華民國耳鼻喉科醫學雜誌 |
卷期 | 34:1 民88.01-02 |
頁次 | 頁7-11 |
分類號 | 416.812 |
關鍵詞 | 噪音; 聽力喪失; 鐵路; Noise; Hearing loss; Railroads; |
語文 | 中文(Chinese) |
中文摘要 | 背景:噪音是引起聽力喪失最危險的因素之一,不同的噪音源對聽力的影響也不盡相同。本文乃研究位於鐵路旁學校之師生,長期曝露在火車行駛的噪音下,是否對聽力造成影響。 方法:1997年4月間將臺北市立大理國小的師生分為受噪音組與非噪音組,隨機抽樣共300人分別進行純音聽力檢查,並以問卷調查受檢者的症狀表現。 結果:聽力異常者的聽力圖型以4K dip和高音急墜型佔多數,症狀表現以耳鳴和自覺聽力變差佔多數。鐵路噪音對大理國小噪音組與非噪音組聽力異常者的影響,無明顯差異。噪音組中聽力正常的學生其聽力閾值有大於非噪音組中聽力正常學生聽力閾值的趨勢。 結論:鐵路噪音對聽力的影響目前雖不明顯,但長期來說仍不容忽視,鐵路旁學校之師生應每年定期作聽力檢查以預防噪音性聽力喪失。 |
英文摘要 | Background: Noise is one of the hazardous factors causing hearing loss. People may have the risk of hearing impairment in a noisy environment. The purpose of this study was to evaluate the risk of noise-induced hearing loss in students and teachers who had long-duration exposure to noise from heavy train traffic. Methods: According to the level of noise exposure, students and teachers at Taipei Municipal Da-Lee elementary school were divided into a noise exposure group and a non-noise exposure group. Three hundred subjects, including 120 from the noise exposure group and 180 from the non-noise exposure group, were enrolled to undergo pure tone audiometry. A questionaire was used to evaluate the clinical manifestations for every individual in these groups. Results: Most audiograms of persons with abnormal hearing showed a 4k dip or high frequency loss. The clinical symptoms included tinnitus and subjective hearing impairment. In addition, there was no significant difference in hearing loss induced by railroad noise between the noise exposure group and the non-noise exposure group. In the noise exposure group, students with normal hearing showed a higher threshold level than that of the non-noise exposure group. Conclusions: Despite of the non-significant result of this study. we should pay more attention to the influence of railroad noise on hearing over the long term. The hearing levels of students and teachers in a noisy environment caused by heavy train traffic should be checked annually, thereby preventing the possibility of hearing impairment. |
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