Ishida G, Nasu Y, Nakashima K, Sato T, Takahashi K
Division of Neurology, Faculty of Medicine, Tottori University, Yonago, Japan.
Scand J Work Environ Health. 1992 Apr;18(2):124-7. doi: 10.5271/sjweh.1601.
With a microneurographic method, sympathetic nerve activity in the skin was recorded from median nerve fascicles of six patients with vibration-induced white finger and four age- and gender-matched normal subjects. At an ambient temperature of 15 degrees C the sympathetic nerve activity was greater in the patients than in the normal subjects. The burst activity was increased in all of the subjects during the water immersion test of the contralateral hand, but neither the increase in the mean burst number nor the mean area under the neurogram showed statistically significant group differences. Thus, although vasoconstrictive tone is greater in patients with vibration-induced white finger than in healthy subjects, no support could be found for the hypothesis that increased vascular tone is of prime importance for attacks of white finger in vibration-exposed subjects.
采用微神经图法，从6例振动性白指患者及4例年龄和性别匹配的正常受试者的正中神经束记录皮肤交感神经活动。在环境温度为15摄氏度时，患者的交感神经活动高于正常受试者。在对侧手的冷水浸泡试验期间，所有受试者的爆发性活动均增加，但平均爆发次数的增加或神经图下的平均面积在两组间均无统计学显著差异。因此，尽管振动性白指患者的血管收缩张力高于健康受试者，但未找到证据支持血管张力增加对振动暴露受试者白指发作至关重要这一假说。
