RETRACTED ARTICLE: Assessment of sacral tissue oxygenation oscillations in persons with spinal cord injury

Zengyong Li, Jianping Li, Yan Wang, Yonghui Wang

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

Abstract

The objective of this study is to assess the blood oxygenation oscillations in the tissue over the sacrum using spectral analysis of near-infrared spectroscopy (NIRS) signals based on wavelet transform. A total of twenty subjects were recruited for this study, of which ten were persons with spinal cord injury (SCI) (3 women, 7 men, age=34.5±5.2 y) and the other ten were healthy subjects (3 women, 7 men, age=36.5±6.2 y). External pressure of 26.6kPa (200 mmHg) was applied to the sacrum via a specifically designed indentor. The loading duration was 3 minutes. The subjects were examined lying face-down. Tissue oxygenation signal was monitored for 20 minutes prior to and after the loading period from the tissue over the sacrum area using NIRS. The results showed that the amplitude of the [HbO2] and [Hb] component in intervals I, II and III for persons with SCI was significantly lower during the resting conditions than that for normal subjects (p>0.05). During the post loading period, the response of [HbO2] and [Hb] oscillatory activities in intervals II and III were significantly lower in the tissue over the sacrum for persons with SCI than that for normal subjects (p>0.05). The results indicated that the low oscillatory activities might be related to early tissue injury in persons with SCI.

Original languageEnglish
Title of host publication5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011
PublisherIEEE Computer Society
Pages1-4
Number of pages4
ISBN (Print)9781424450893
DOIs
Publication statusPublished - May 2011
Externally publishedYes

Publication series

Name5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011

Keywords

  • Near-infrared spectroscopy
  • Pressure ulcer
  • Tissue oxygenation
  • Wavelet transform

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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