Document Detail


Central circulatory responses in normotensive and hypertensive pregnancy.
MedLine Citation:
PMID:  471868     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Haemodynamic responses in normotensive pregnancy in the antenatal phase show that cardiac output is elevated by the end of the first trimester, and remains elevated throughout pregnancy, although it may fall very slightly at the end of the third trimester of pregnancy. Heart rate remains virtually static throughout pregnancy, although it may fall very slightly at the end of the third trimester of pregnancy. Arterial blood pressure remains virtually unaltered. During labour in patients with traditional anaesthesia, cardiac output is elevated by 40% overall at the end of the labour, and this rise may be as much as 60% in the immediate post-partum period. Patients with epidural analgesia show no overall rise in cardiac output throughout labour. Following Caesarean section there may be massive rises in cardiac output. In patients who become hypertensive as a result of pregnancy, there are marked individual patterns. These different groups show patients with elevated levels of cardiac output, patients with a pure elevation of systemic vascular resistance, and a third group in which there is elevation of both resistance and output. It seems certain that different syndromes are occurring, the theoretical explanations for which are discussed.
Authors:
M M Lees
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Postgraduate medical journal     Volume:  55     ISSN:  0032-5473     ISO Abbreviation:  Postgrad Med J     Publication Date:  1979 May 
Date Detail:
Created Date:  1979-10-24     Completed Date:  1979-10-24     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0234135     Medline TA:  Postgrad Med J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  311-4     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Pressure
Cardiac Output
Female
Heart Rate
Hemodynamics*
Humans
Hypertension / physiopathology*
Labor, Obstetric
Pregnancy*
Pregnancy Complications, Cardiovascular / physiopathology*
Vascular Resistance
Comments/Corrections

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


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