手传振动对植物神经功能的影响

目的 探讨手传振动对作业工人植物神经功能的影响。方法 对54名金矿凿岩工人进行了振动负荷前后心率变异性的测试，并对其植物神经功能紊乱的表现进行了分析。结果 静息状态下振动负荷试验前、后，对照组、接振组、白指组SDANN均有依次降低、LF／HF均有依次增高的趋势，其中白指组变化更明显（P＜0．05，P＜0．01）；试验前后比较，试验后SDANN较试验前降低、试验后LF／HF较试验前增高，其中接振组与对照组的变化差异有显著性（P＜0．05、P＜0．01）。白指组，接振组植物神经功能紊乱表现的发生率高于或显著高于对照组（P＜0．01）；神经衰弱综合发生率、动脉收缩压白指组显著高于接振组（P＜0．05）。结论 手传振动可致植物神经功能紊乱，包括交感染神经兴奋性增高和迷走神经兴奋性降低，随接振时间的延长，这种紊乱有加重的趋势。

Effects of hand - transmitted vibration on autonomic nervous functions

Objective To study the effects of handtransmitted vibration on autonomic nervous functions. Methods Heart rate variability(HRV) was measured in 54 workers exposed to handtransmitted vibration brfore and after vibration loading test(VLT), and the clinical syndromes related to disorders of autonomic nervous functions were analyzed. Result SDANN had a decreasing tendency and LF/HF has a increasing tendency in workers compeared with control group(P<0 05,P<0 01). The rate of clinical syndromes related to disorder of autornomic functions increased in workers compeared with control group both before VLT and after VLT(P<0 05,P<0 01). Conclusion Handtransmitted vibration can result in disorders of autonomic nervous function which were more serious with the delaying of vibration exposure duration.