Document Detail


Severe variable decelerations and fetal pulse oximetry during the second stage of labor.
MedLine Citation:
PMID:  15608457     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: The aim of the study was to investigate the usefulness of fetal pulse oximetry in cases of severe variable decelerations in the second stage of labor. METHODS: It is a prospective study including 58 patients. Thirty-eight patients (group A) had a normal uncomplicated labor and 20 patients (group B) developed severe variable decelerations during the second stage of labor. All patients were primiparous with normal pregnancies and had electronic fetal monitoring of labor in conjunction with fetal pulse oximetry. An estimation of fetal pH and base deficit was performed at delivery in all patients. RESULTS: There was no statistically significant difference in relation to maternal age and gestational age between the two groups. Group A patients did not delivered neonates with metabolic acidosis. Six out of 20 (group B) patients delivered neonates with a pH <7.10 despite a fetal pulse oximetry reading of >30%. CONCLUSIONS: It appears that fetal pulse oximetry is not capable of detecting pre-acidotic or acidotic fetuses during the second stage of labor in patients with severe variable decelerations and the management of such patients should be supported by fetal scalp pH when indicated or otherwise the obstetrician should expedite delivery either with assisted operative delivery or cesarean section. Fetal heart rate monitoring was introduced into clinical practice over 30 years ago. It continues to be the predominant method of intrapartum fetal surveillance despite worries about its accuracy and efficacy.
Authors:
Emanouel Salamalekis; Panagiotis Bakas; Ioannis Saloum; Nikolaos Vitoratos; Georgios Creatsas
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Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  Fetal diagnosis and therapy     Volume:  20     ISSN:  1015-3837     ISO Abbreviation:  Fetal. Diagn. Ther.     Publication Date:    2005 Jan-Feb
Date Detail:
Created Date:  2004-12-20     Completed Date:  2005-04-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9107463     Medline TA:  Fetal Diagn Ther     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  31-4     Citation Subset:  IM    
Affiliation:
Second Department of Obstetrics and Gynecology, Aretaieio Hospital, Athens, Greece. eurotas@ath.forthnet.gr
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MeSH Terms
Descriptor/Qualifier:
Acidosis / diagnosis*,  embryology*
Adult
Female
Fetal Blood
Fetal Monitoring*
Heart Rate, Fetal*
Humans
Hydrogen / blood
Hydrogen-Ion Concentration
Infant, Newborn
Labor Stage, Second*
Oximetry / standards*
Pregnancy
Prospective Studies
Chemical
Reg. No./Substance:
1333-74-0/Hydrogen

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


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