都市环境电磁辐射对青少年心电图和外周血细胞的影响

Effects of electromagnetic radiation in metropolis environment on teenagers' electrocardiogram and blood cells

目的阐明电磁波同时混合存在于一个环境内是否会对青少年的心电活动和外周血细胞产生影响。方法采用心电图仪和全自动血球计数仪对106例青少年心电图和血常规进行检查。结果高背景环境电磁辐射组心率、PR间期、QRS波时间、QT间期、外周血血红蛋白含量和血小板数量与低背景环境电磁辐射组相比差异均无显著性,外周血白细胞总数明显低于低背景环境电磁辐射组(P<005)。从外周血白细胞分类来看,高背景环境电磁辐射组外周血单核细胞数量和男外周血嗜酸性粒细胞数量明显高于低背景环境电磁辐射组(P<005)。结论大都市现有环境电磁辐射对青少年(14～18岁)心电活动无明显影响,对外周血白细胞可能有一定的影响,主要表现在外周血白细胞总数下降,单核细胞和嗜酸性粒细胞数量相对增多,值得进一步研究。

Objective Our previous investigation indicated that electromagnetic radiation level of city environment in some frequency range has gotten close to national standard limits. This study is to investigate the effects of these frequency electromagnetic waves coexisted in same environment on teenagers' electrocardiogram and blood cells. Methods Electrocardiogram and blood cells were examined in 106 cases of teenagers by using electrocardiograph and blood counting instruments respectively. Results There were not significantly different in heart rate, P-R interphase, QRS-wave time, Q-T interphase, blood hemoglobin content and blood platelet number in teenagers between high and low electromagnetic radiation environment(P>0.05). The total blood leucocyte number in teenagers was statistically lower in high electromagnetic radiation environment than that in low electromagnetic radiation environment(P<0.05). With regard to classification of blood leucocyte, the blood monocyte number in 14-18 years old of teenagers and the blood eosinophil number in boy were significantly higher in high electromagnetic radiation environment than those in low electromagnetic radiation environment(P<0.05). Conclusion The electromagnetic radiation nowadays in metropolis environment may have no harmful effects on teenagers' electrocardiogram and have harmful effects on teenagers' blood leucocyte-mainly showing decreased total blood leucocyte number, increased percentages of monocyte and eosinophil number.