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[目的]探讨职业性铅接触工人血铅水平降低和神经传导速度增高之间的相关关系。[方法]分别于2007、2009年检测某电池厂空气铅浓度和60名职业铅接触工人与91名对照组工人的血铅值、运动神经及感觉神经传导速度,用协方差分析和相关分析对两者的变化关系进行探讨。[结果]铅接触组2009年度血铅水平较2007年度血铅水平有明显降低,由2007年度的(657.9±216.4)μg/L降至2009年度的(345.8±169.2)μg/L,与年龄、性别无关;2009年度感觉神经传导速度较2007年度有明显增加(P<0.05)。男性工人正中神经、尺神经、腓浅神经感觉传导速度增加值与血铅下降值之间存在一定的相关关系,相关系数分别为0.365、0.276、0.17,具有统计学意义。对照组2009年度神经传导速度较2007年度未见明显变化。[结论]男性工人血铅下降水平和感觉神经传导速度增加值之间存在着一定的相关关系。可通过及时控制血铅水平,达到改善感觉神经传导速度的目的。
[Objective] To explore the correlation between blood lead levels and nerve conduction velocity in occupational lead exposed workers. [Methods] The blood lead levels, motor nerve and sensory nerve conduction velocity in 60 air lead workers and 91 control workers were detected in air samples of a battery factory in 2007 and 2009 respectively. The covariance analysis and correlation analysis The relationship between the two changes. [Results] The blood lead level of lead exposure group in 2009 was significantly lower than that of 2007, from (657.9 ± 216.4) μg / L in 2007 to (345.8 ± 169.2) μg / L in 2009, Sex has nothing to do; sensory nerve conduction velocity in 2009 than 2007 increased significantly (P <0.05). There were some correlations between the sensory velocity of the median nerve, the ulnar nerve and the superficial peroneal sensory conduction velocity of male workers and the descent of blood lead, the correlation coefficients were 0.365,0.276,0.17, respectively, with statistical significance. The control group in 2009 nerve conduction velocity compared with 2007 did not change significantly. [Conclusion] There is a certain correlation between the level of blood lead decline and the increase of sensory nerve conduction velocity in male workers. Through the timely control of blood lead levels, to achieve the purpose of improving the sensory nerve conduction velocity.