Effect of repetitive loading on tissue oxygenation

Katy W. Yuen, Debbie Z. Ou, Alex P. Chan, Wing Cheung Eric Tam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Pressure-induced tissue breakdown is a life-threatening complication for patients with diminished pain sensation and impaired mobility. In clinical situation, patients are encouraged to move regularly to avoid persisted tissue compression. However, there is little information concerning how frequent the act of pressure relief should take place. This study aims to examine the effect of repetitive loading on tissue oxygenation. A total of 14 healthy subjects (age ranged from 21 to 29 with BMI<25) were recruited to participate in this project. Tissue compression was performed by applying a pressure of 150mmHg over the greater trochanter and repeated with a cycle time of 10 minutes for 4 consecutive cycles. The changes in blood oxygenation were monitored using tissue reflectance spectrophotometry. The results indicated that there are no statistical significant differences in tissue oxygenation index (OXI) among the four loading cycles. However it was observed that the lowest OXI percentage change was being found in the second loading episode followed by a gradual decrease in the effect of loading on OXI reduction.
Original languageEnglish
Title of host publicationi-CREATe 2007 - Proceedings of the 1st International Convention on Rehabilitation Engineering and Assistive Technology in Conjunction with 1st Tan Tock Seng Hospital Neurorehabilitation Meeting
Pages98-100
Number of pages3
DOIs
Publication statusPublished - 1 Dec 2007
Eventi-CREATe 2007 - 1st International Convention on Rehabilitation Engineering and Assistive Technology in Conjunction with 1st Tan Tock Seng Hospital Neurorehabilitation Meeting - Singapore, Singapore
Duration: 23 Apr 200726 Apr 2007

Conference

Conferencei-CREATe 2007 - 1st International Convention on Rehabilitation Engineering and Assistive Technology in Conjunction with 1st Tan Tock Seng Hospital Neurorehabilitation Meeting
CountrySingapore
CitySingapore
Period23/04/0726/04/07

Keywords

  • Blood oxygenation
  • Pressure ulcer
  • Reflectance spectrophotometry

ASJC Scopus subject areas

  • Biomedical Engineering
  • Rehabilitation
  • Neurology
  • Physical Therapy, Sports Therapy and Rehabilitation

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