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目的研究舰船磁场环境对作业人员健康的影响。方法对通磁作业的扫雷艇（按通常扫雷工况通磁６天，每天５小时）和不通磁的对照艇（不产生磁场环境）各２６名艇员同时测试试验前后心电图、心功能、甲襞微循环、脑血流图、血液ＬＤＨ和ＡｃｈＥ及外周血淋巴细胞微核变化。结果磁作业组通磁６天的艇员心输出量增加（Ｐ＜０．０１），甲襞微循环管径扩张（Ｐ＜０．０１），脑血流图幅值升高（Ｐ＜０．０５）；经休息６天，上述变化均恢复原状（Ｐ＞０．０５）；其它指标未见明显变化（Ｐ＞０．０５）。结论舰船磁场环境中作业６天的人员可出现某些可逆性生理性变化，经休息６天即恢复原状，未见病理性变化。
Objective To study the impact of ship’s magnetic field environment on the health of workers. Methods Twenty-six crew members of minesweepers with magnetic flux-passing operation (magnetic flux 6 hours a day, 5 hours a day) and non-magnetic control boats (no magnetic field environment) were tested simultaneously before and after electrocardiogram, cardiac function and A襞 microcirculation, cerebral blood flow diagram, blood LDH and AchE and peripheral blood lymphocytes micronucleus changes. Results The cardiac output of magnetic crew increased 6 days (P <0.01), the diameter of microcirculation of Jiajiao group dilated (P <0.01), and the amplitude of cerebral blood flow increased .05). After resting for 6 days, the above changes were restored to their original values (P> 0.05). Other indexes did not change significantly (P> 0.05). CONCLUSIONS Some reversible physiological changes may occur in a ship with a magnetic field environment of 6 days. Resting for 6 days restores the original status without any pathological changes.