Document Detail

Catecholamine release in the newborn infant at birth.
MedLine Citation:
PMID:  887309     Owner:  NLM     Status:  MEDLINE    
Catecholamines were determined by a fluorimetric technique in umbilical blood which was collected from newborn infants immediately after birth. The mean catecholamine concentration was 62.1 nmol/liter in the umbilical artery and 29.3 nmol/liter in the umbilical vein of newborn full term infants delivered uneventfully. This value is considerably higher than in resting adults. Similar levels of catecholamines were seen after elective cesarean sections, whereas considerably higher levels were found after breech deliveries. In the full term asphyxiated infants about a 4-fold increase of the catecholamine concentration was found in both the umbilical arterial and venous blood. The amine concentration level correlated inversely to the pH below 7.25 (10 log catecholamine concentration versus pH, r = -0.71). Preterm infants had, in general, lower amine levels than full term infants both after uneventful deliveries and after intrauterine asphyxia. The catecholamine levels were considerably increased in the newborn infants who showed some kind of abnormal fetal heart rate variation during the last hour before birth; in particular baseline changes were associated with high levels whereas only a moderate increase was seen after loss of beat-to-beat variation.
H Lagercrantz; P Bistoletti
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Pediatric research     Volume:  11     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  1977 Aug 
Date Detail:
Created Date:  1977-09-22     Completed Date:  1977-09-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  889-93     Citation Subset:  IM    
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MeSH Terms
Apgar Score
Asphyxia Neonatorum / blood
Breech Presentation
Catecholamines / blood*
Cesarean Section
Epinephrine / blood
Fetal Blood / analysis*
Gestational Age
Heart Rate
Infant, Newborn*
Infant, Premature
Labor, Obstetric*
Sympathetic Nervous System / physiology
Reg. No./Substance:
0/Catecholamines; 51-43-4/Epinephrine

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

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