Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Click here to sign up for SAGE Journal Email Alerts today!

Sign In to gain access to subscriptions and/or personal tools.
Journal of the Society for Gynecologic Investigation
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Carter, A. M.
Right arrow Articles by Huch, R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Carter, A. M.
Right arrow Articles by Stiller, R.
Right arrow Articles by König, V.
Right arrow Articles by Jørgensen, J. S.
Right arrow Articles by Svendsen, P.
Right arrow Articles by Huch, R.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Calibration of a Reflectance Pulse Oximeter in Fetal Lambs for Arterial Oxygen Saturations Below 70%

Anthony M. Carter, PhD

Department of Physiology, University of Odense, Denmark; Division of Perinatal Physiology, Department of Obstetrics, University Hospital, Zurich, Switzerland

Ruth Stiller, MD

Department of Physiology, University of Odense, Denmark; Division of Perinatal Physiology, Department of Obstetrics, University Hospital, Zurich, Switzerland; Division of Perinatal Physiology, Department of Obstetrics, University Hospital, Frauenklinikstrasse 10, CH-8091 Zurich, Switzerland rub{at}fhk.smtp.usz.ch

Volker König, PhD

Jan S. Jørgensen, MD, PhD

Per Svendsen, MSc, DVM

Renate Huch, MD

Department of Physiology, University of Odense, Denmark; Division of Perinatal Physiology, Department of Obstetrics, University Hospital, Zurich, Switzerland

Objective: To calibrate a reflectance pulse oximeter developed at the Division of Perinatal Physiology, University Hospital of Zurich, for monitoring of oxygen saturations below 70%.

Methods: Oxygen saturation measured monivasively with the reflectance pulse oximeter in fetal sheep was compared with oxygen saturation of arterial blood samples measured by a conventional two-wavelength oximeter. Oxygen saturation was varied by stepwise reduction of the inspired oxygen concentration of the ewe.

Results: A total of 58 data pairs was obtained from five fetuses, with a range of 10.9-73.5% for the reference method and 6.8-69.2% for the pulse oximetry oxygen saturation values. There was good correlation between the results obtained by the two methods (r2 = .89, P < .0001), with a 95% confidence interval of ± 12.5%. The pulse oximeter showed a precision of 6.2% oxygen saturation.

Conclusion: The Zurich reflectance pulse oximeter offers valid measurements of oxygen saturation levels down to 10% oxygen saturation, and is therefore suitable for monitoring the fetus during delivery.

Key Words: Pulse oximetry • arterial oxygen saturation • fetal lambs • calibration

Journal of the Society for Gynecologic Investigation, Vol. 5, No. 5, 255-259 (1998)
DOI: 10.1177/107155769800500506
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?