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British heart journal · Feb 1990
Comparative StudyNon-invasive determination of cardiac output by Doppler echocardiography and electrical bioimpedance.
- D B Northridge, I N Findlay, J Wilson, E Henderson, and H J Dargie.
- Department of Cardiology, Western Infirmary, Glasgow.
- Br Heart J. 1990 Feb 1; 63 (2): 93-7.
AbstractCardiac output measured by thermodilution in 25 patients within 24 hours of acute myocardial infarction was compared with cardiac output measured by Doppler echocardiography (24 patients) and electrical bioimpedance (25 patients). The mean (range) cardiac outputs measured by Doppler (4.03 (2.2-6.0) 1/min) and electrical bioimpedance (3.79 (1.1-6.2) 1/min) were similar to the mean thermodilution value (3.95 (2.1-6.2) 1/min). Both non-invasive techniques agreed closely with thermodilution in most patients. None the less, three results with each method disagreed with thermodilution by more than 1 1/min. Both non-invasive techniques were reproducible and accurate in most patients with acute myocardial infarction. Doppler echocardiography was time consuming and technically demanding. Electrical bioimpedance was simple to use and had the additional advantage of allowing continuous monitoring of the cardiac output.
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