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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