An Optical Fiber Photoplethysmographic System for Central Nervous System Tissue (original) (raw)

2006, 2006 International Conference of the IEEE Engineering in Medicine and Biology Society

Abstract

A new system for measuring the oxygen saturation of blood within tissue has been developed, for a number of potential patient monitoring applications. This proof of concept project aims to address the unmet need of real-time measurement of oxygen saturation in the central nervous system (CNS) for patients recovering from neurosurgery or trauma, by developing a fiber optic signal acquisition system for internal placement through small apertures. The development and testing of a two-wavelength optical fiber reflectance photoplethysmography (PPG) system is described. It was found that good quality red and near-infrared PPG signals could be consistently obtained from the human fingertip (n=6) and rat spinal cord (n=6) using the fiber optic probe. These findings justify further development and clinical evaluation of this fiber optic system.

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References (13)

  1. J. P. Phillips is with the Anaesthetic Laboratory, St Bartholomew's Hospital, London, EC1A 7BE, UK (phone: 0044-20-7601-7527; fax: 0044- 20-7601-7528; e-mail: j.p.phillips@qmul.ac.uk). P. A. Kyriacou is with the School of Engineering and Mathematical Sciences, City University, London, EC1V 0HB, UK (e-mail: p.kyriacou@city.ac.uk).
  2. K. J. George was with the Neuroscience Centre, Queen Mary, University of London, E1 0NS, UK (email:kjoshigeorge@yahoo.co.uk). J. V. Priestley is with the Neuroscience Centre, Queen Mary, University of London, E1 0NS, UK (email: j.v.priestley@qmul.ac.uk). R. M. Langford is with the Anaesthetic Laboratory, St Bartholomew's Hospital, London, EC1A 7BE, UK (e-mail: r.m.langford@btconnect.com). REFERENCES
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