交通噪声对交通警察听力曲线的影响  

PATTERN OF AUDIOGRAM IN TRAFFIC POLICEMEN

作　　者：刘元福[1] 张涛[1] 杨玉秀[1] 王勋[1] 廖德全[1] 张志维 

机构地区：[1]重庆医科大学劳动卫生学教研室,重庆市公安交通管理局

出　　处：《职业卫生与病伤》1995年第1期11-13,共3页Occupational Health and Damage

摘　　要：重庆市中区８个交通路段等效连续声级为７０．５～７５．７ＬｅｑｄＢ（Ａ）。２１９名交通警察和１０２人的对照组听力曲线特征为：高频段听力曲线呈Ｖ或Ｕ型凹陷型，交警组明显多于对照组（ｐ＜０．０１）。高频段呈倾斜型下降两组无差别。双耳听力曲线呈对称性分布、对照组多于交警组（Ｐ＜０．０５）。高频段和语言段听力损伤，交警组明显多于对照组（Ｐ＜０．０１）。he levels of road traffic noise were measured in eight main streets of Chongqing city andthe equivalent sound levels were found to be 70. 5-75. 5 LeqdB(A). An exposed group of 219traffic policemen and 102 conntrol subjects, were audiometrically examined.The results showed that the distribution of the audiocurve of both ears appeared to be sym- metric and the V- and U- shape valleys were found at high frequency band among the exposedgroup, which differed remarkably from the controls(P < 0. 01).Meanwhile the prevalence ofhearing loss at high fenquency and speech frequency among the traffic policemen was significantly higher than that of the controls(P<0. 05).

关 键 词：交通警察 交通噪声 听力曲线 

分 类 号：TB53[理学—物理]