Simultaneous determination of the stroke volume and the left ventricular residual fraction with the fiberoptic- and thermodilution method
- 1 January 1971
- journal article
- research article
- Published by Oxford University Press (OUP) in Cardiovascular Research
- Vol. 5 (1) , 136-140
- https://doi.org/10.1093/cvr/5.1.136
Abstract
Simultaneous measurements of the concentration of dye by a fiberoptic catheter and of the temperature by a thermistor catheter were obtained in dogs. No significant difference for cardiac output and stroke volume was found. The slightly but significant higher residual fraction by thermodilution than by fiberoptic technique is caused by cold transfer between ventricular myocardium and cavity. It becomes evident after the fifth beat.Keywords
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