Document Detail


Measurement of rapid changes in cardiac stroke volume. An evaluation of the impedance cardiography method.
MedLine Citation:
PMID:  910608     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
One hundred and twenty-nine simultaneous measurements were carried out on seven patients, 67 at rest and 62 during the Valsalva manoeuvre, in order to compare impedance cardiography with the thermodilution method, during rapid changes in cardiac stroke volume and pulmonary blood volume. A coefficient of correlation of 0.86 was found following linear regression analysis of the whole material. Analysis of the individual patient showed that the mean coefficient of correlation was 0.94 (range 0.91-0.97), and that the slope of the regression lines was 0.41 to 1.82, and further that the mean intercept was 0.2 ml. It is concluded that impedance cardiography can be employed for measuring the relative intraindividual changes in cardiac stroke volume during the Valsalva manoeuvre, and it is suggested that it may be of use in other situations, such as during haemorrhage or continuous positive pressure ventilation.
Authors:
N J Secher; A Thomsen; P Arnsbo
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Acta anaesthesiologica Scandinavica     Volume:  21     ISSN:  0001-5172     ISO Abbreviation:  Acta Anaesthesiol Scand     Publication Date:  1977  
Date Detail:
Created Date:  1977-11-30     Completed Date:  1977-11-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370270     Medline TA:  Acta Anaesthesiol Scand     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  353-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Blood Pressure
Cardiac Output*
Electrocardiography
Heart Rate
Humans
Plethysmography, Impedance*
Thermodilution*
Valsalva Maneuver

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


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