scholarly journals Cardiac output measurement during exercise in COPD: A comparison of dye dilution and impedance cardiography

2019 ◽  
Vol 13 (4) ◽  
pp. 222-231 ◽  
Author(s):  
Zafeiris Louvaris ◽  
Stavroula Spetsioti ◽  
Vasileios Andrianopoulos ◽  
Nikolaos Chynkiamis ◽  
Helmut Habazettl ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Impedance Cardiography ◽  
Cardiac Output Measurement ◽  
Output Measurement ◽  
Dye Dilution

Impedance cardiography for cardiac output measurement: An evaluation of accuracy and limitations

1990 ◽  
Vol 11 (suppl I) ◽  
pp. 79-92 ◽  
Author(s):  
S. W. White ◽  
A. W. Quail ◽  
P. W. De Leeuw ◽  
F. M. Traugott ◽  
W. J. Browns ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Impedance Cardiography ◽  
Cardiac Output Measurement ◽  
Output Measurement

Dye-dilution cardiac output without blood withdrawal in the conscious rabbit

1978 ◽  
Vol 235 (2) ◽  
pp. H258-H261 ◽  
Author(s):  
L. E. Boerboom ◽  
J. N. Boelkins
Keyword(s):  
Cardiac Output ◽  
Correlation Coefficient ◽  
Cardiac Output Measurement ◽  
Dilution Method ◽  
Modified Technique ◽  
Output Measurement ◽  
Blood Withdrawal ◽  
Conscious Rabbit ◽  
Dye Dilution ◽  
Flow Through

Cardiac output can be measured in the conscious rabbit without blood withdrawal by use of a modified dye-dilution method. Blood flows continuously from the central ear artery through a Silastic catheter that passes through a modified cuvette lumen and back into an ear vein. Blood flow through this shunt was 1.5 ml/min. This modified technique was evaluated by comparison with a simultaneously performed cardiac output measurement using radioactive microspheres and by making consecutive dye-dilution measurements at short time intervals. A correlation coefficient of 0.96 was obtained when comparing dye-dilution and microsphere cardiac outputs. The difference between 11 paired measurements was 7.09 +/- 5.24% (mean +/- SD). Consecutive outputs measured within 3 min of each other by the flow-through technique had a correlation coefficient of 0.99 and a difference between the first and second determinations of 3.52 +/- 2.38%. The method permits dye-dilution cardiac output measurement in the conscious rabbit while avoiding the potential error caused by blood withdrawal from small animals.

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