Document Detail


Measurement of cardiac stroke volume by impedance cardiography in the last trimester of pregnancy.
MedLine Citation:
PMID:  6364687     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Simultaneous determination of cardiac stroke volume by impedance cardiography and the dye dilution technique was compared in 10 women during the last trimester of pregnancy. Measurements were performed in different body positions to investigate the influence of body position on stroke volume. The correlation coefficient for all measurements was 0.87. Mean stroke volume determined by impedance cardiography was significantly (p less than 001) lower than mean stroke volume calculated by the dye dilution technique. There was no significant difference between the mean change in stroke volume determined by the two techniques during serial measurements. The reproducibility of individual impedance-determined stroke volumes (6.1 ml) did not differ significantly from individual values obtained by dye dilution (9.3 ml). Maximum mean impedance-determined stroke volume was recorded in the left lateral position (83.8 +/- 4.0 ml). Mean stroke volume was significantly (p less than 0.01) reduced in the supine position (17.9%). A smaller (14.4%) reduction was registered in the right lateral position. These changes in stroke volume according to body position were equally evident by both methods. Impedance cardiography is a safe, reliable, non-invasive technique for the measurement of changes in stroke volume during late pregnancy. The ability of impedance cardiography to determine changes in stroke volume was unaffected by changes in body position.
Authors:
I Milsom; L Forssman; R Sivertsson; O Dottori
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta obstetricia et gynecologica Scandinavica     Volume:  62     ISSN:  0001-6349     ISO Abbreviation:  Acta Obstet Gynecol Scand     Publication Date:  1983  
Date Detail:
Created Date:  1984-03-14     Completed Date:  1984-03-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370343     Medline TA:  Acta Obstet Gynecol Scand     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  473-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Cardiac Output*
Cardiography, Impedance*
Female
Humans
Indicator Dilution Techniques*
Plethysmography, Impedance*
Posture
Pregnancy*
Pregnancy Trimester, Third
Stroke Volume*

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


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