Document Detail

Microcirculatory effect of different skin contacting pressures around the blood pressure.
MedLine Citation:
PMID:  18974438     Owner:  NLM     Status:  MEDLINE    
We used laser Doppler flowmetry (LDF) and spectrum analysis to investigate the microcirculatory responses to pressure stimulation (PS) of the skin surface. A control group without PS applied, and four groups with different PS (20, 60, 100 and 160 mmHg in groups PS(20), PS(60), PS(100) and PS(160), respectively) were formed from seven volunteers. Each experiment involved recording a 20 min baseline and two effect data recorded at 0-20 and 50-70 min after stopping PS. The relative energy contribution (REC) in five frequency bands revealed by Morlet-wavelet transformation was calculated. At the pressed site, the dc component of the flux signal in the second effect increased significantly only in group PS(60) compared with the control values. The REC was significantly increased in a myogenic-related band in groups PS(60), PS(100) and PS(160), and was significantly decreased in a nerve-related band only in group PS(160). Different PS magnitudes compress vessels to different extents. The proposed vessel-pressing model-which is supported by the results of spectral analysis of flux signals-might help to elucidate the underlying mechanism. The study results indicate that an improved perfusion was sustained for the longest time when applying 60 mmHg PS. This might aid the development of techniques for improving skin microcirculatory perfusion.
Hsin Hsiu; Wei-Chen Hsu; Shu-Ling Chang; Chia-Liang Hsu; Shih-Ming Huang; Yuh-Ying Wang Lin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-30
Journal Detail:
Title:  Physiological measurement     Volume:  29     ISSN:  0967-3334     ISO Abbreviation:  Physiol Meas     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-11-28     Completed Date:  2009-02-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306921     Medline TA:  Physiol Meas     Country:  England    
Other Details:
Languages:  eng     Pagination:  1421-34     Citation Subset:  IM    
Department of Electrical Engineering, Yuan Ze University, No 135, Rd Yuan-Tung, Taoyuan, Taiwan.
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MeSH Terms
Acupuncture Points
Ankle / blood supply
Blood Pressure / physiology*
Data Interpretation, Statistical
Hand / blood supply
Laser-Doppler Flowmetry
Microcirculation / physiology
Regional Blood Flow / physiology
Signal Processing, Computer-Assisted
Skin / blood supply*
Skin Temperature / physiology
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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