Document Detail

Comparison of thermodilution and transthoracic electrical bioimpedance cardiac outputs.
MedLine Citation:
PMID:  2071427     Owner:  NLM     Status:  MEDLINE    
Current methods of measuring cardiac output require the invasive insertion of a thermodilution catheter with its concomitant risks and complications. We examined the noninvasive method of transthoracic electrical bioimpedance (TEB) in comparison with thermodilution cardiac outputs in a sample of 44 critically ill patients with poor left ventricular function (left ventricular ejection fraction less than 30%) and with either ischemic or idiopathic dilated cardiomyopathy. Dyspnea, mitral regurgitation, tricuspid regurgitation, and difference between real and ideal weight had the most marked effects on the correlation between the two methods, with lesser influence by left ventricular ejection fraction, height, weight, hemoglobin, hematocrit, and aortic regurgitation. TEB and thermodilution cardiac outputs were correlated, at r = 0.51 (p less than 0.00009), but the low reliability and low percentage of TEB readings within 0.5 L/min of thermodilution cardiac outputs (31%) renders TEB inadequate for clinical measurement of cardiac outputs in this patient population.
M A Woo; M Hamilton; L W Stevenson; D L Vredevoe
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Heart & lung : the journal of critical care     Volume:  20     ISSN:  0147-9563     ISO Abbreviation:  Heart Lung     Publication Date:  1991 Jul 
Date Detail:
Created Date:  1991-08-22     Completed Date:  1991-08-22     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0330057     Medline TA:  Heart Lung     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  357-62     Citation Subset:  AIM; IM    
School of Nursing, University of California, Los Angeles.
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MeSH Terms
Body Height
Body Weight
Cardiac Output*
Cardiography, Impedance / instrumentation,  methods,  standards*
Cardiomyopathy, Dilated / complications,  diagnosis*,  physiopathology
Dyspnea / complications
Evaluation Studies as Topic
Hemoglobins / analysis
Middle Aged
Reproducibility of Results
Stroke Volume
Thermodilution / instrumentation,  methods,  standards*
Reg. No./Substance:
Comment In:
Heart Lung. 1992 Jan;21(1):98-9   [PMID:  1735664 ]

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

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