Share Email Print
cover

Proceedings Paper

Monitoring the impact of pressure on the assessment of skin perfusion and oxygenation using a novel pressure device
Author(s): Jessica C. Ramella-Roman; Thuan Ho; Du Le; Pejhman Ghassemi; Thu Nguyen; Alison Lichy; Suzanne Groah
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Skin perfusion and oxygenation is easily disrupted by imposed pressure. Fiber optics probes, particularly those spectroscopy or Doppler based, may relay misleading information about tissue microcirculation dynamics depending on external forces on the sensor. Such forces could be caused by something as simple as tape used to secure the fiber probe to the test subject, or as in our studies by the full weight of a patient with spinal cord injury (SCI) sitting on the probe. We are conducting a study on patients with SCI conducting pressure relief maneuvers in their wheelchairs. This study aims to provide experimental evidence of the optimal timing between pressure relief maneuvers. We have devised a wireless pressure-controlling device; a pressure sensor positioned on a compression aluminum plate reads the imposed pressure in real time and sends the information to a feedback system controlling two position actuators. The actuators move accordingly to maintain a preset value of pressure onto the sample. This apparatus was used to monitor the effect of increasing values of pressure on spectroscopic fiber probes built to monitor tissue oxygenation and Doppler probes used to assess tissue perfusion.

Paper Details

Date Published: 20 March 2013
PDF: 8 pages
Proc. SPIE 8576, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIII, 85760N (20 March 2013); doi: 10.1117/12.2006256
Show Author Affiliations
Jessica C. Ramella-Roman, The Catholic Univ. of America (United States)
Thuan Ho, The Catholic Univ. of America (United States)
Du Le, The Catholic Univ. of America (United States)
Pejhman Ghassemi, The Catholic Univ. of America (United States)
Thu Nguyen, The 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. 8576:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIII
Israel Gannot, Editor(s)

© SPIE. Terms of Use
Back to Top