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Paperdoi:10.1117/1.3598858

Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor

Venue listed2011Added Nov 5, 2026

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Authors: Justin P. Phillips, Panayiotis A. Kyriacou, Deric P. Jones, Richard M. Langford, Serene H. Chang

Journal of Biomedical Optics

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TL;DR

A prototype fiber-optic reflectance-mode pulse oximetry sensor and measurement system is developed for the purposes of estimating arterial oxygen saturation in the esophagus. A dedicated probe containing miniature right-angled glass prisms coupled to light sources and a photodetector by means of optical fibers is designed and used to record photoplethysmographic (PPG) signals from the esophageal epithelium in anesthetized patients. The probe is inserted simply by an anesthesiologist in all cases, and signals are recorded successfully in all but one of 20 subjects, demonstrating that esophageal PPG signals can be reliably obtained.

  • Published in Journal of Biomedical Optics (2011).

Abstract

A prototype fiber-optic reflectance-mode pulse oximetry sensor and measurement system is developed for the purposes of estimating arterial oxygen saturation in the esophagus. A dedicated probe containing miniature right-angled glass prisms coupled to light sources and a photodetector by means of optical fibers is designed and used to record photoplethysmographic (PPG) signals from the esophageal epithelium in anesthetized patients. The probe is inserted simply by an anesthesiologist in all cases, and signals are recorded successfully in all but one of 20 subjects, demonstrating that esophageal PPG signals can be reliably obtained. The mean value of the oxygen saturation recorded from the esophagus for all subjects is 94.0 ± 4.0%. These results demonstrate that SpO2 may be estimated in the esophagus using a fiber-optic probe.

Verbatim from the publisher's DOI record (opens in a new tab) · Abstract as deposited by the publisher with Crossref; © the authors/publisher

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Tasks & signals

Signals

PPG

Keywords

Kyriacou BibliographyOrgan Tissue Perfusion

How it works

How Method works: Setup → Method → TargetSetup: Signals (PPG). Method: Method.SetupSignals: PPGSignalsPPGMethodMethod

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Phillips, J. P., Kyriacou, P. A., Jones, D. P., Langford, R. M., & Chang, S. H. (2011). Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor. Journal of Biomedical Optics. https://doi.org/10.1117/1.3598858
Phillips, Justin P., Panayiotis A. Kyriacou, Deric P. Jones, Richard M. Langford, and Serene H. Chang. 2011. "Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor." Journal of Biomedical Optics. https://doi.org/10.1117/1.3598858.
Phillips, J. P., Kyriacou, P. A., Jones, D. P., Langford, R. M. and Chang, S. H. (2011) 'Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor', Journal of Biomedical Optics. doi: 10.1117/1.3598858.
Phillips, Justin P., et al. "Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor." Journal of Biomedical Optics, 2011. https://doi.org/10.1117/1.3598858.
J. P. Phillips, P. A. Kyriacou, D. P. Jones, R. M. Langford, and S. H. Chang, "Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor," Journal of Biomedical Optics, 2011, doi: 10.1117/1.3598858.
@article{phillips2011photoplethysmographic,
  title         = {{Photoplethysmographic measurements from the esophagus using a new fiber-optic reflectance sensor}},
  author        = {Phillips, Justin P. and Kyriacou, Panayiotis A. and Jones, Deric P. and Langford, Richard M. and Chang, Serene H.},
  year          = {2011},
  journal       = {Journal of Biomedical Optics},
  doi           = {10.1117/1.3598858}
}

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