Measurement of the skin microcirculation through intact bandages using laser Doppler flowmetry

被引:0
作者
J. M. Melhuish
L. Krishnamoorthy
T. Bethaves
M. Clark
R. J. Williams
K. G. Harding
机构
[1] University of Wales College of Medicine,Wound Healing Research Unit
[2] University of Glamorgan,School of Electronics
来源
Medical and Biological Engineering and Computing | 2004年 / 42卷
关键词
Laser Doppler; Microcirculation; Blood flow; Compression bandage;
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学科分类号
摘要
The microcirculation under compression bandages has been assessed by numerous methods; however, the measurement techniques can disrupt the bandage-skin interface, affecting the measurement. In this study, a non-invasive method for measuring cutaneous blood flow using laser Doppler flowmetry (LDF) is presented. Ten volunteers had their microcirculation assessed by a laser Doppler probe being placed on their upper forearm with and without a light-transmissive gel and with a compression bandage plus light-transmissive gel. A circulatory challenge to the bandaged forearm in two of the volunteers was also undertaken. The median (95% confidence interval) perfusion (p.u.) for the skin surface was 24 (15–33) perfusion units (p.u.), and the skin plus light-transmissive gel demonstrated a higher perfusion: 66 (50–82) p.u., (p<0.012). The addition of the compression bandage, with additional gel allowed to permeate through to the underlying skin, decreased the perfusion to 27 (20–34) p.u. (p<0.007). In both volunteers, the microcirculatory flow responded to the vascular challenge, resulting in flow changes related to the cuff pressure (45-27 and 14-8 p.u.). This method demonstrated that it may be possible to assess the microcirculation through intact bandages, without the need to place any sensors at the skin-bandage interface.
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页码:259 / 263
页数:4
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