我国机动车驾驶员人数日益增多，其健康状况已引起广泛的关注。那么，长期从事噪声等有害作业，会对心血管产生什么不良影响呢？ 据专家分析，噪声刺激可引起交感神经兴奋，使心肌兴奋性和传导性发生改变。此外，驾驶员工作往往注意力高度集中，不免精神紧张，容易产生大脑皮层 The number of motor vehicle drivers in China is increasing day by day, and their health status has drawn wide attention. So, long-term noise and other harmful operations, will have any adverse cardiovascular effects? According to expert analysis, noise stimulation can cause sympathetic excitation, cardiac excitability and conductivity change. In addition, the driver’s work is often highly concentrated attention, inevitably nervous, prone to cerebral cortex