论文部分内容阅读
对高频作业50例工人,在电场强度33～40V/m及磁场强度7～22A/m条件下工作90分钟后描记心电图,和工作前自身心电图比较,即工作后心电图以窦房结自律性降低,心室复极改变为主,出现一时性心律不齐,右束枝传导阻滞,左心室高电压等变化,P—R间期、QRS时限、Q—T时限和T波无明显改变。这些变化绝大多数工人脱离现场经休息30分钟后恢复到激发前状态。
For 50 workers with high frequency operation, the electrocardiogram was recorded 90 minutes after the electric field intensity was 33-40 V / m and the magnetic field intensity was 7-22 A / m, and compared with the previous electrocardiogram before work. That is, Decreased, and ventricular repolarization changed. There was a transient arrhythmia, right bundle branch block and left ventricular high voltage. There was no significant change in P-R interval, QRS interval, Q-T interval and T wave. Most of these changes returned to the pre-excitation state after 30 minutes of rest from the scene.