柴油机厂噪声作业工人心电图异常改变分析
Analysis of Abnormal ECG in the Workers Exposed to Noise in a Diesel Engine Factory
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摘要:
目的 探讨柴油机厂噪声作业工人心电图异常改变。 方法 采用现场环境检测和职业健康体检的方法,对柴油机厂从事噪声作业工人332人的心电图进行分析,并与293名对照组进行比较。 结果 接触组工人心电图异常率明显高于对照组(P < 0.01)。心电图异常主要表现为窦性心动过缓、窦性心律不齐、ST-T改变及分支传导阻滞。接触组工人各工龄段心电图异常率均高于对照组,心电图异常率在初期最明显,不随工龄的增长而增加。 结论 噪声作业对柴油机厂工人心血管系统可能有一定程度的影响。 Abstract:Objective To explore the abnormalities in ECG of the workers exposed to noise in a diesel engine factory. Methods The environment noise levels in different work places were detected and physical examination of 336 noise-exposed workers were performed in a Diesel engine factory. Their ECG abnormalities were also analyzed. Another 293 non noise-exposed workers in the same factory were selected as the control group. Results The abnormal rate of ECG in the exposed group were significantly higher than those in the control group (P < 0.01).ECG abnormalities are mainly manifested as sinus bradycardia, sinus arrhythmia, ST-T abnormality and fascicular block. The abnormal rates of ECG in the exposed group in every work-age group were higher than those of the control group. The abnormal rate of ECG was most obvious in the initial period, and not increased when work-age increased. Conclusion The exposure of noise might have certain impact on cardiovascular system.
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