Finger skin temperature and laser-Doppler finger blood flow in subjects exposed to hand-arm vibration.
Finger skin temperature and laser-Doppler finger blood flow in subjects exposed to hand-arm vibration.
复制标题
暴露于手臂振动的受试者的手指皮肤温度和激光多普勒手指血流。
DOI：
10.2486/indhealth.36.171
复制
发表时间：
1998
影响因子：
2
通讯作者：
H. Iwata
中科院分区：
文献类型：
--
作者：
S. Mirbod;H. Yoshida;M. Jamali;K. Miyashita;H. Takada;R. Inaba;H. Iwata
目标
本研究旨在通过同时测量手指皮肤温度(FST)和手指血流量(FBF)来评估接触手臂振动的林业工人的外周循环功能。
方法
受试者是5名患有振动性白指(VWF)的男性，4名手部麻木的受试者，以及5名暴露的对照组，他们没有任何与振动综合征相关的体征或症状。在手浸入冷水(10摄氏度，10分钟)后的10分钟恢复期内，同时测量FST和激光多普勒FBF。使用两个光纤间隔较窄和较宽的激光多普勒血流探头，可以对毛细血管和深层血管之间的手指血流进行分区测量。
结果
VWF患者和麻木患者的毛细血管和深部血管在冷浸泡试验中和冷浸泡后的FST和FBF在冷浸泡后即刻略有升高，且无随时间延长而增大的趋势。冷浸泡试验后，对照组的FST和FBF显著高于其他组。尤其是冷刺激后5~10min，VWF组深部血管FBF值明显低于对照组。在观察过程中，FST与记录的毛细管和深部FBF值有显著的线性关系，且与深部FBF值(即在每个选定条件下的P<；0.01)密切相关。毛细管中回归线的斜率在深部FBF中较陡和较浅。
结论
除了测量毛细血管的FBF外，还可以通过包括对深部FBF的评估来获得关于振动暴露者外周循环功能的更详细和准确的信息。
OBJECTIVES
This study was aimed to assess the peripheral circulatory functions of forestry workers exposed to hand-arm vibration, using simultaneous measurements of finger skin temperature (FST) and finger blood flow (FBF).
METHODS
The subjects were five men with vibration-induced white finger (VWF), four subjects with numbness in their hands and five exposed controls without any signs or symptoms related to vibration syndrome. Simultaneous measurements of FST and laser-Doppler FBF were performed before, during and following a 10-min recovery period after the hand was immersed in cold water (10 degrees C, 10 min). Partitional measurements of finger blood flows could be made between the capillaries and deeply located vessels using two laser-Doppler flow probes having narrower and wider optic fiber separations.
RESULTS
The FST as well as the FBF of the capillary and deeply located vessels during and following the cold immersion test in those with VWF and in the subjects with numbness had a slight increase immediately following the cold immersion and no tendency to be augmented as the time span increased. After the cold immersion test, the control group had significantly greater FST and FBF compared to other groups. Particularly, from the 5th to the 10th min after the cold provocation, the values of FBF of the deeply located vessels in those with VWF were significantly lower than the controls. During the course of observation, the FST had significantly linear relationship with the recorded capillary and deep FBF values, and that was much closely correlated with the deep FBF (i.e., P < 0.01 in each selected condition). The slope of the regression lines in the capillary were steeper and shallow in the deep FBF.
CONCLUSIONS
In addition to the measurement of capillary FBF, more detailed and accurate information on the peripheral circulatory functions of vibration-exposed subjects can be obtained by including the assessment of the deep FBF.