锰粉加工工人心血管功能的调查研究  

Investigation on Cardiovascular Functions in Milling W orkers Exposed to Manganese Dust

作　　者：姜岳明[1] 谢佩意[1] 陆继培[1] 罗珺蓉 孔祥初 陈金绪 

机构地区：[1]广西医科大学劳动卫生教研室,广西南宁530021 [2]广西医科大学公共卫生学院,广西南宁530021

出　　处：《铁道劳动安全卫生与环保》1999年第3期179-182,共4页Railway Occupational Safety Health & Environmental Protection

摘　　要：对 ５５ 名锰粉加工工人和 ５６ 名对照工人的调查结果显示，工人工作地点 Ｍｎ Ｏ２ 浓度几何均值为 １９６ ｍ ｇ／ｍ ３ （锰尘 ０１７～２２．２４ ｍ ｇ／ｍ ３ ），样品超标率 ８８７％ 。接触组头晕头痛、睡眠障碍、容易疲劳和记忆不良的主诉率明显高于对照组（ Ｐ＜００５～００１）。接触组和对照组的心电图异常、高血压和低舒张压检出率未见显著性差异，其心率、 Ｐ Ｒ间期、 Ｑ Ｒ Ｓ波、收缩压和舒张压的均值比较也没有显著性差异。接触组心电图异常和低舒张压的 Ｏ Ｒ分别是 １．５６（９５％ 可信区间为 ０７０～３．５０）和 ２．０８（９５％ 可信区间为 ０１８～２３．５７）。In the present investigation, 55 m illing w orkers exposed to m anganese dustand 56 control subjects w ere exam ined on their subjective sym ptom s, heartbeat, E C G andblood pressure. The results show ed that the geom etric m ean of Mn O2 concentration in the airm anganese dust of the w orkplace w as 1.96 m g/m 3 and ranged from 0.17 to 22.24 m g/m 3 . Asignificantly higher prevalence of dizziness and headache, insom nia, fatigability and poorm em ory w as found in the exposed group than in the controlgroup ( P< 0.05～0.01). Therew ere no significant differences in the incidence of abnorm al E C G, hypertension and low dias tolic blood pressure, and in the m ean of heartbeat, P R interval, Q R Sw ave, systolic pres sure and diastolic pressure betw een the exposed and control groups. The odds ratio forw orkers exposed to m anganese dust w as 1.56 for abnorm al E C G [95% confidence interval(95% C I) 0.70～3.50] and 2.08 (95% C I0.18～23.57).

关 键 词：锰粉加工 心血管功能 调查 职业病 

分 类 号：R135.2[医药卫生—劳动卫生]