Document Detail

Fetal pulse oximetry and visual on-line signal identification in the second stage of labor.
MedLine Citation:
PMID:  8885778     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine the accuracy of reflection pulse oximetry and visual on-line signal identification during the second stage of labor. STUDY DESIGN: The reflection pulse oximetry system used allows visual on-line identification of valid signals by showing the original red and infrared signals. With this system oxygen saturation measurements are averaged over nine heartbeats only. An atraumatic suction probe was used. The measurements of the last 10 minutes before delivery were compared with umbilical venous cord blood samples taken soon after delivery. RESULTS: The correlation between reflection pulse oximetry readings during the last 10 minutes before delivery and umbilical vein oxygen saturation was significant (r = 0.45; p < 0.0005). Standard regression analysis showed R2 of 0.45. This did not change if weighted by the rate of valid signals (R2 = 0.42). If the predelivery loss of valid signals was less than 5 minutes, the correlation improved (r = 0.47, p < 0.001). Umbilical vein pH did not correlate with pulse oximetry readings. CONCLUSION: The reflection pulse oximetry system used allows visual on-line identification of even short periods of valid signals and reflects actual oxygen saturation in fetal arterial blood.
M C Haeusler; G Arikan; J Haas; F Kainer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  175     ISSN:  0002-9378     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  1996 Oct 
Date Detail:
Created Date:  1996-12-05     Completed Date:  1996-12-05     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1071-4     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, Karl-Franzens University of Graz, Austria.
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MeSH Terms
Equipment Design
Evaluation Studies as Topic
Fetal Blood*
Fetal Monitoring / methods*
Hydrogen-Ion Concentration
Infant, Newborn / blood
Labor Stage, Second* / blood
Oximetry* / instrumentation
Umbilical Veins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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