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Validation of a Noninvasive Measurement of Regional Hemoglobin Oxygen Saturation

  • Valerie Pollard
  • Eric A. DeMelo
  • Donald J. Deyo
  • Rebecca Dalmeida
  • R. Widman
  • Donald S. Prough
Conference paper

Abstract

Near-infrared (NIR) spectroscopy may provide a continuous and noninvasive assessment of global brain hemoglobin oxygen saturation by measuring the differential absorption of infrared light [1–3]. As biological tissues are relatively transparent to infrared light at wavelengths between 400 and 1000 nm, infrared light may penetrate skin, subcutaneous tissue, bone, and dura to the brain [4–7], where it is absorbed by oxygenated hemoglobin, deoxygenated hemoglobin, and cytochrome aa3. Thus, the attenuation of infrared light of specific wavelengths by these chromophores may be used to measure brain oxygenation [1, 3, 8–11]. The hemoglobin oxygen saturation measured by the cerebral oximeter receives contributions from arterial, venous, and capillary blood vessels, with a predominantly venous contribution [11, 12], and may reflect the balance between cerebral oxygen consumption and delivery.

Keywords

Infrared Light Hemoglobin Oxygen Saturation Cerebral Oximetry Pulse Oximeter Reading Cerebral Oximeter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Tokyo 1995

Authors and Affiliations

  • Valerie Pollard
    • 1
  • Eric A. DeMelo
    • 1
  • Donald J. Deyo
    • 1
  • Rebecca Dalmeida
    • 1
  • R. Widman
    • 2
  • Donald S. Prough
    • 1
  1. 1.Department of AnesthesiologyThe University of Texas Medical Branch in GalvestonGalvestonUSA
  2. 2.Somanetics Corp.TroyUSA

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