Skin microvascular and metabolic response to pressure relief maneuvers in people with spinal cord injury

Jessica C. Ramella-Roman; Du V. N. Le; Pejhman Ghassemi; Thu A. Nguyen; Alison Lichy; Suzanne Groah

doi:10.1117/12.2006260

15 February 2013 Skin microvascular and metabolic response to pressure relief maneuvers in people with spinal cord injury

Jessica C. Ramella-Roman, Du V. N. Le, Pejhman Ghassemi, Thu A. Nguyen, Alison Lichy, Suzanne Groah

Author Affiliations +

Proceedings Volume 8579, Optical Interactions with Tissue and Cells XXIV; 85790R (2013) https://doi.org/10.1117/12.2006260
Event: SPIE BiOS, 2013, San Francisco, California, United States

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.

Citation Download Citation

Jessica C. Ramella-Roman, Du V. N. Le, Pejhman Ghassemi, Thu A. Nguyen, Alison Lichy, and Suzanne Groah "Skin microvascular and metabolic response to pressure relief maneuvers in people with spinal cord injury", Proc. SPIE 8579, Optical Interactions with Tissue and Cells XXIV, 85790R (15 February 2013); https://doi.org/10.1117/12.2006260

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