Document Detail

How heel oxygenation changes under pressure.
MedLine Citation:
PMID:  18028125     Owner:  NLM     Status:  MEDLINE    
The mechanism of heel pressure ulcers after hip surgery is not entirely understood. The purpose of this one-group, prospective, repeated-measures design study was to examine how the external pressure of the bed surface affects heel skin oxygen tension in adults on the first 3 days after hip surgery. Transcutaneous oxygen sensors were placed on the plantar surface of each foot, close to the heels. Measures were taken on room air and with an oxygen challenge with the heels (1) suspended above the bed surface (preload), (2) on the bed surface for 15 minutes (loading), and (3) again suspended above the bed surface for 15 minutes (unloading). Eighteen hip surgery patients (mean age 58.3+/-16.1 years) from two hospitals participated. When compared with preload on room air, both loading and unloading on all 3 days resulted in a reduction in heel oxygen tension bilaterally (p<0.001). Heel oxygenation decreased without the anticipated hyperemic response, raising the question of whether this is a sign of increased pressure ulcer risk. Further work is needed to understand why this short period of external pressure results in decreased oxygenation and why oxygen tension does not return to baseline when pressure is removed.
Vivian K Wong; Nancy A Stotts; Harriet W Hopf; Erika S Froelicher; Glenna A Dowling
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society     Volume:  15     ISSN:  1067-1927     ISO Abbreviation:  Wound Repair Regen     Publication Date:    2007 Nov-Dec
Date Detail:
Created Date:  2007-11-21     Completed Date:  2008-03-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9310939     Medline TA:  Wound Repair Regen     Country:  United States    
Other Details:
Languages:  eng     Pagination:  786-94     Citation Subset:  IM    
School of Nursing, San Jose State University, San Jose, California 95192-0057, USA.
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MeSH Terms
Analysis of Variance
Foot Ulcer / physiopathology*,  prevention & control
Heel / blood supply*
Hip Joint / surgery
Middle Aged
Pain Measurement
Postoperative Complications / physiopathology,  prevention & control
Pressure Ulcer / physiopathology*,  prevention & control
Prospective Studies
Stress, Mechanical
Grant Support

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

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