Document Detail

Temperature gradient between fetus and mother as an index for assessing intrauterine fetal condition.
MedLine Citation:
PMID:  410299     Owner:  NLM     Status:  MEDLINE    
Temperature gradient between fetus and mother (deltaTF-M) was measured in 29 pregnant baboons. Thermocouples were implanted in the fetal esophagus and the maternal colon, and, in some instances, thermistor probes were also placed in the fetal esophagus, scalp, and shoulder muscle. Under steady-state conditions, the fetal temperature was found to be higher than that of the mother. Temperatures in the fetal esophagus, scalp, and shoulder were 0.47, 0.28, and 0.19 degrees C. respectively, higher than those in the maternal colon. There was an increase in deltaTF-M during acute fetal stress induced by asphyxia, secondary to occlusion of the umbilical cord, maternal aorta, or inferior vena cava, or to acutely increased uterine activity. This increase in deltaTF-M most likely reflects impairment of heat dissipation from the fetus to the maternal compartment. A decreased deltaTF-M was observed when the stress on the fetus was subacute and prolonged. This is probably the result of a diminution of heat production by the fetus as the metabolic rate is lowered during prolonged hypoxia. Ten to 30 minutes after the cessation of vital signs of the fetus, the deltaTF-M became zero.
H O Morishima; M N Yeh; W H Niemann; L S James
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  129     ISSN:  0002-9378     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  1977 Oct 
Date Detail:
Created Date:  1977-11-30     Completed Date:  1977-11-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  443-8     Citation Subset:  AIM; IM    
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MeSH Terms
Acute Disease
Asphyxia / diagnosis
Body Temperature*
Fetal Death / diagnosis
Fetal Diseases / diagnosis
Fetal Monitoring*
Fetus / physiology*

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

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