Document Detail


Is the correlation between fetal oxygen saturation and blood pH sufficient for the use of fetal pulse oximetry?
MedLine Citation:
PMID:  12375547     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: Fetal pulse oximetry was performed during labor in high-risk cases for fetal distress to determine the diagnostic value of this method. METHODS: The fetal SpO2 values were blinded from the obstetrician so that these values did not influence clinical decisions. Mean and lowest SpO2 measurements for the last 30 min prior to either fetal scalp blood sampling or delivery were correlated with scalp pH or pH from the umbilical artery. RESULTS: No significant correlation was found between pH and mean fetal oxygen saturation (correlation coefficient -0.02, p = 0.9). There was no significant correlation between pH and lowest fetal oxygen saturation (correlation coefficient 0.04, p = 0.84). Concerning the feasibility of the method, we found that only 23 of 65 included patients were suitable for analysis; in 20% of cases, we were not able to perform a SpO2 measurement. CONCLUSIONS: None of three cases with pH below 7.05 would have been detected using mean SpO2 over the last 30 min prior to fetal scalp blood sampling or delivery. Only one case would have been detected using the lowest SpO2 measurement over this period. We conclude that fetal SpO2 measurements during labor are of poor diagnostic value, with a disappointing feasibility and therefore are not ready for implementing into daily clinical practice.
Authors:
R J P Rijnders; B W J Mol; P J H M Reuwer; A P Drogtrop; M M A Vernooij; G H A Visser
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  11     ISSN:  1476-7058     ISO Abbreviation:  J. Matern. Fetal. Neonatal. Med.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-10-11     Completed Date:  2003-01-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  80-3     Citation Subset:  IM    
Affiliation:
Division of Obstetrics, Neonatology and Gynecology, University Medical Center Utrecht, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Bradycardia / blood
Female
Fetal Blood / chemistry*
Fetal Distress / blood
Fetal Monitoring*
Gestational Age
Heart Rate, Fetal
Humans
Hydrogen-Ion Concentration
Labor, Obstetric
Male
Netherlands
Oximetry*
Oxygen / blood*
Pre-Eclampsia / blood
Pregnancy
Pregnancy, Prolonged / blood
Scalp / blood supply
Umbilical Arteries
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

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


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