Document Detail

Effects of ankle-to-knee external pressures on skin blood perfusion under and distal to compression.
MedLine Citation:
PMID:  12897676     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare the effects of select leg compression pressures on blood perfusion in the skin overlying bone and the skin distal to the leg compression. DESIGN: Blood perfusion of skin overlying the tibia and the foot dorsum was simultaneously measured in 12 healthy subjects using laser Doppler. Each subject's calf was compressed from ankle to knee with an air cast that applied external pressure, ranging from 0 to 40 mm Hg in 10 mm Hg increments. All measurements were initiated after a 20-minute rest interval and were recorded with each subject in a supine position. SETTING: University research center. RESULTS: The main findings show that compression causes a significant decrease in skin blood perfusion (SBF) at both sites, with greater reductions in SBF occurring with increased compression pressure. Greater SBF reductions occurred at the foot than at the directly compressed tibia site. Thus, at the highest pressure (40 mm Hg), the foot SBF reduction (61.6% +/- 13.7%) was greater than at the directly compressed tibial site (33.3% +/- 0.3%), both of which were significantly less than baseline (P <.01). CONCLUSIONS: The present findings and considerable related evidence indicate that lower extremity external compression, within the range of commonly used therapeutic levels, reduces SBF by an amount that depends on the magnitude of the compression pressures. The quantitative difference between the effect of compression on SBF within the compression area, and distal to it, is likely a result of the way that the compression affects arteriolar and venous resistance to blood flow at the 2 sites. From a clinical perspective, it would seem prudent to anticipate that sub-bandage and distal SBF would be negatively affected by compression, with greater effects likely in tissue distal to compression.
Harvey N Mayrovitz; Nancy Sims
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Advances in skin & wound care     Volume:  16     ISSN:  1527-7941     ISO Abbreviation:  Adv Skin Wound Care     Publication Date:    2003 Jul-Aug
Date Detail:
Created Date:  2003-08-04     Completed Date:  2003-09-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100911021     Medline TA:  Adv Skin Wound Care     Country:  United States    
Other Details:
Languages:  eng     Pagination:  198-202     Citation Subset:  N    
College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA.
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MeSH Terms
Bandages / adverse effects*
Regional Blood Flow / physiology*
Skin / blood supply*

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

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