无线寻呼台微波作业人员心电图分析  

Analysis of ECG on the Staffs Exposed to Microwave in the Radio Calling Signal Station

作　　者：李焕英[1] 

机构地区：[1]广东省职业病防治院

出　　处：《卫生研究》1997年第1期6-8,共3页Journal of Hygiene Research

摘　　要：对某无线寻呼台３２１例微波作业人员进行了心电图（ＥＣＧ）检查与分析。全部受测对象为现职连续６个月以上的寻呼电脑女性操作者（接触组），并以１０７例非接触微波的女性为对照组。结果表明：无线寻呼台电脑机前微波漏能功率密度为２０～５０ｍＷ／ｍ２，均未超标。寻呼台室外环境微波漏能功率密度为２２０～８８０ｍＷ／ｍ２，有一定的微波漏能。接触组ＥＣＧ的异常发生率为２７．７３％，对照组为１１．２１％，有非常显著性差异（Ｐ＜０．０１）。经分析发现接触组中窦性心律不齐发生率（１９．３６％）明显高于对照组（５．６０％），Ｐ＜０．０１；接触组Ｐ－Ｒ间期（０．１５５４±０．０２１１）ｍｓ较对照组（０．１４８±０．０２２７）ｍｓ延长，Ｐ＜０．０１。其余心率、ＱＲＳ间期、Ｑ－Ｔ间期的数值以及窦性心动过缓、窦性心动过速和心电轴左偏等发生率，两组之间均无差异（Ｐ＞０．０５）。结果提示：无线寻呼台电脑操作人员长期接触低强度微波，可导致机体植物神经功能紊乱，从而出现窦性心率不齐的改变。321 electrocardiographies (ECG) from the staffs exposed to microwave in a radio calling signal station were analysed. The subjects exposed to microwave were female computer operators, who worked over six months in the station. 107 female non exposers were served as control. The intensities of microwave in work site were below the standard (20～50mW/m 2) . The abnormal prevalence of ECG in the exposed group was 27 73%, which was significantly higher than that in the control group (11 21%, P <0 01). The prevalence of sinus arrhythmia in exposed group (19 63%) was significantly higher than that in the control group (5 60%, P <0 01). The P R intervals were also lengthened in exposed group [(0 1554±0 021)ms] than that in control group [(0 1487±0 0227)ms, P <0 01]. No significant differences were found in the heart rate, QRS intervals, Q T intervals, sinus bradycardia, sinus tachycardia and left axis deviation between exposed and control groups ( P >0 05). It suggested that computer operators exposed to microwave of lower intensity in the radio calling signal station might lead to sinus arrhythmia, due to the disorder of vegetative nerve system.

关 键 词：微波作业 无线寻呼台 心电图 窦性心率不齐 

分 类 号：R122.4[医药卫生—环境卫生学] R541.7[医药卫生—公共卫生与预防医学]