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Proceedings Paper

Skin microvascular and metabolic response to pressure relief maneuvers in people with spinal cord injury
Author(s): Jessica C. Ramella-Roman; Du V. N. Le; Pejhman Ghassemi; Thu A. Nguyen; Alison Lichy; Suzanne Groah
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Paper Abstract

Clinician’s recommendations on wheelchair pressure reliefs in the context of the high prevalence of pressure ulcers that occur in people with spinal cord injury is not supported by strong experimental evidence. Some data indicates that altered tissue perfusion and oxygenation occurring under pressure loads, such as during sitting, induce various pathophysiologic changes that may lead to pressure ulcers. Pressure causes a cascade of responses, including initial tissue hypoxia, which leads to ischemia, vascular leakage, tissue acidification, compensatory angiogenesis, thrombosis, and hyperemia, all of which may lead to tissue damage. We have developed an advanced skin sensor that allows measurement of oxygenation in addition to perfusion, and can be safely used during sitting. The sensor consists of a set of fiber optics probes, spectroscopic and Laser Doppler techniques that are used to obtain parameters of interest. The overriding goal of this project is to develop the evidence base for clinical recommendations on pressure reliefs. In this paper we will illustrate the experimental apparatus as well as some preliminary results of a small clinical trial conducted at the National Rehabilitation Hospital.

Paper Details

Date Published: 15 February 2013
PDF: 5 pages
Proc. SPIE 8579, Optical Interactions with Tissue and Cells XXIV, 85790R (15 February 2013); doi: 10.1117/12.2006260
Show Author Affiliations
Jessica C. Ramella-Roman, Catholic Univ. of America (United States)
Du V. N. Le, Catholic Univ. of America (United States)
Pejhman Ghassemi, Catholic Univ. of America (United States)
Thu A. Nguyen, Catholic Univ. of America (United States)
Alison Lichy, National Rehabilitation Hospital (United States)
Suzanne Groah, National Rehabilitation Hospital (United States)

Published in SPIE Proceedings Vol. 8579:
Optical Interactions with Tissue and Cells XXIV
E. Duco Jansen; Robert J. Thomas, Editor(s)

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