Ekenvall L, Lindblad L E, Bevegård S, Etzell B M
Am J Ind Med. 1987;12(1):47-54. doi: 10.1002/ajim.4700120106.
To study if obliterative lesions in digital arteries are relevant as the pathogenic factor in vibration white finger, finger blood flow was measured in 15 subjects with advanced symptoms and in 15 controls by venous occlusion plethysmography before and after vasodilation. Before vasodilation, the subjects had lower temperature, blood flow, and peak blood flow after arterial occlusion in the fingers than did the controls, while venous tone was increased. In addition, after sympathicolysis, finger blood flow was lower in the study than in the control group, but there was no difference peak blood flow after arterial occlusion or in venous tone. The results indicate that the subjects have a high vascular tone causing a reduction in blood flow during submaximal flow conditions. Obliterative organic lesions in finger arteries do not seem to be present, since the "maximal" flow values of the subjects are similar to those of the controls.
为研究指动脉闭塞性病变是否为振动性白指的致病因素，通过静脉阻断体积描记法，在血管舒张前后，对15例有晚期症状的受试者和15例对照者的手指血流量进行了测量。在血管舒张前，受试者手指的温度、血流量以及动脉阻断后的血流峰值均低于对照组，而静脉张力增加。此外，在交感神经阻滞之后，研究组的手指血流量低于对照组，但动脉阻断后的血流峰值或静脉张力并无差异。结果表明，受试者具有较高的血管张力，在次最大流量条件下会导致血流量减少。手指动脉中似乎不存在闭塞性器质性病变，因为受试者的“最大”流量值与对照组相似。
