Document Detail


Cardiac output in normal pregnancy measured by impedance cardiography.
MedLine Citation:
PMID:  7156865     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Impedance cardiography was used to study cardiodynamic changes throughout normal pregnancy. Stroke volume, heart rate and cardiac output were determined in fourteen normal primigravidae from early pregnancy until 6-25 weeks after delivery. To elucidate the influence of the patient's position on cardiac output, measurements were made in the supine as well as in the left and right lateral positions. Stroke volume and cardiac output increased up to the 28th week of pregnancy and then decreased during late pregnancy. These changes seemed to be independent of the patient's position. After delivery a further reduction in cardiac output due to a significant decrease in heart rate was found. No significant differences in cardiac output were found between right and left lateral position. However, during pregnancy as well as after delivery, cardiac output measured by impedance cardiography was significantly higher in the supine position than in the lateral positions. Thus, the impedance method does not seem to be reliable in measuring absolute values of stroke volume and cardiac output but may be used for relative measurements during pregnancy.
Authors:
P Myhrman; G Granerus; K Karlsson; Y Lundgren
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Scandinavian journal of clinical and laboratory investigation     Volume:  42     ISSN:  0036-5513     ISO Abbreviation:  Scand. J. Clin. Lab. Invest.     Publication Date:  1982 Oct 
Date Detail:
Created Date:  1983-03-24     Completed Date:  1983-03-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0404375     Medline TA:  Scand J Clin Lab Invest     Country:  NORWAY    
Other Details:
Languages:  eng     Pagination:  513-20     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Pressure
Cardiac Output*
Cardiography, Impedance*
Female
Heart Rate
Humans
Plethysmography, Impedance*
Postpartum Period
Posture
Pregnancy*
Stroke Volume
Vascular Resistance

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


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