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Practical aspects of calibrating fetal pulse oximetry

  • Conference paper
Hypoxische Gefährdung des Fetus sub partu

Abstract

Pulse oximeters are a non-invasive means of estimating a patient’s arterial oxygen saturation, SaO2, by shining computer-controlled light from inexpensive LED’s through the tissue of an earlobe, finger or toe, or by reflecting Hght off the forehead, face, scalp or other well vascularized flat surface. A computer chip serves to coordinate the timing of Hght signals and records the changes in two or more wavelengths of hght. As each monochromatic LED is activated the transmitted light is detected as the amperage generated by a single inexpensive photoreceiving diode. The LEDs should selectively provide monochromatic hght in the region of 660 nm in the red where deoxyhemoglobin has increased absorption and 940 nm in the near infrared where oxyhemoglobin has slightly greater absorption as seen at the top of Fig. 1. The Hght transmitted varies as each pulse of blood flows through the tissue (17).

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Author information

Authors and Affiliations

  1. Neonatal Division, Children’s Hospital of Buffalo, State University of New York, 219 Bryant Street, Buffalo, New York, 14222, USA

    John E. Yount M.D.

Authors
  1. John E. Yount M.D.
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Editor information

Editors and Affiliations

  1. Frauenklinik/Perinatologisches Labor, Klinikum Großhadern, Marchioninistraße 15, 81366, München, Deutschland

    Reinhold Knitza

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© 1994 Dr. Dietrich Steinkopff Verlag, GmbH & Co. KG, Darmstadt

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Yount, J.E. (1994). Practical aspects of calibrating fetal pulse oximetry. In: Knitza, R. (eds) Hypoxische Gefährdung des Fetus sub partu. Steinkopff. https://doi.org/10.1007/978-3-642-95982-0_7

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  • DOI: https://doi.org/10.1007/978-3-642-95982-0_7

  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-642-95983-7

  • Online ISBN: 978-3-642-95982-0

  • eBook Packages: Springer Book Archive

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