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噪音对机体的危害,报告甚多,本文旨在调查噪音刺激作用下植物神经系统对心率的调节作用的改变。一、调查对象:实验组:选择常年接触噪音在80dB(A)以上的工厂作业工人336名。对照组:选择常年在安静环境下工作,噪声在<50dB(A)的工作人员102名。二、选择调查对象的标准:无先天性耳聋、耳病以及先天性心脏病的一般健康人群,年龄20～50岁。三、调查指标:平卧位心率;平卧位的呼气与吸气时的心率差值测定;卧位与迅速坐立时心率改变的差值测定。四、调查使用的心电图机:ECG—6511(日本产)
Noise on the body of the harm, there are many reports, this paper aims to investigate the role of the autonomic nervous system under the noise stimulus to regulate the role of heart rate changes. First, the survey: experimental group: choose perennial contact noise of more than 80dB (A) 336 factory workers. Control group: Choose 102 perennial work in quiet environment, noise <50dB (A) of the staff of 102. Second, the criteria for selecting the survey: no congenital deafness, ear disease and congenital heart disease in general healthy population, aged 20 to 50 years. Third, the survey indicators: supine heart rate; supine supine breathing and heart rate measurement difference; rapid determination of supine position and heart rate changes in the difference between the determination. Fourth, the investigation of the use of ECG machine: ECG-6511 (Japan)