Document Detail


Non-invasive measurement of cardiac output: whole-body impedance cardiography in simultaneous comparison with thermodilution and direct oxygen Fick methods.
MedLine Citation:
PMID:  9434918     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To determine the reliability of whole-body impedance cardiography (ICGWB), with electrodes attached to wrists and ankles, in the measurement of cardiac output (CO) on the basis of simultaneous comparison with thermodilution (TD) and direct oxygen Fick (Fick) methods. DESIGN: Prospective clinical study. SETTING: A surgical intensive care unit at a university hospital. PATIENTS: Thirty consecutive subjects undergoing a coronary artery bypass surgery were investigated preoperatively. MEASUREMENTS: ICGWB derived CO was measured simultaneously with the TD and Fick methods to establish the biases and limits of agreement (LA) between the methods. RESULTS: The results obtained by ICGWB and the invasive methods showed good agreement. The bias and LA between COTD and COICG were 0.00 l/min: 1.37 and 1.37 l/min, respectively, and were close to those obtained between COTD and COFICK, 0.32 l/min; 1.74 and -1.10 l/min. The bias and LA between the COFICK and COICG were -0.32 l/min; -2.24 and 1.60 l/min respectively. The repeatability value of consecutive single measurements for ICGWB (RVICG = 0.57 l/min) was much better than for the TD method (RVTD = 1.10 l/min). CONCLUSION: There was close agreement between the results of the three methods in the measurement of CO. In sedated preoperative patients the accuracy of ICGWB is within clinically acceptable limits and its repeatability is excellent. ICGWB provides a useful alternative to the TD and Fick methods in cases where the pressures supplied by the pulmonary artery catheter are not essential.
Authors:
T Kööbi; S Kaukinen; T Ahola; V M Turjanmaa
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Intensive care medicine     Volume:  23     ISSN:  0342-4642     ISO Abbreviation:  Intensive Care Med     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-02-17     Completed Date:  1998-02-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7704851     Medline TA:  Intensive Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1132-7     Citation Subset:  IM    
Affiliation:
Department of Clinical Physiology, Tampere University Hospital, Finland.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Breath Tests
Cardiac Output*
Cardiography, Impedance / methods*
Coronary Artery Bypass
Female
Humans
Male
Middle Aged
Oxygen / analysis*,  blood
Preoperative Care
Prospective Studies
Reproducibility of Results
Thermodilution / methods*
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

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


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