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Comparison of Doppler echocardiography with thermodilution for assessing cardiac output in advanced congestive heart
A Gola1, M Pozzoli, S Capomolla
1Salvatore Maugeri Foundation-Institute of Research and Care, Rehabilitation Medical Center, Montescano, Pavia, Italy.
Insights
Doppler echocardiography offers a noninvasive method for estimating cardiac output. In advanced heart failure patients, this technique showed better agreement with the Fick method than thermodilution.
Area of Science:
- Cardiology
- Medical Imaging
- Hemodynamics
Background:
- Advanced chronic congestive heart failure (CHF) significantly impacts cardiac function.
- Accurate cardiac output (CO) monitoring is crucial for managing CHF.
- Existing CO measurement methods have limitations.
Purpose of the Study:
- To compare the accuracy of noninvasive Doppler echocardiography for CO estimation against established methods.
- To evaluate Doppler echocardiography's utility in patients with dilated cardiomyopathy and advanced CHF.
Main Methods:
- Seventy-three patients with advanced CHF due to dilated cardiomyopathy were enrolled.
- Cardiac output was measured using Doppler echocardiography, thermodilution, and the Fick oxygen method.
- Agreement between the methods was statistically analyzed.
Main Results:
- Doppler echocardiography demonstrated closer agreement with the Fick oxygen method compared to thermodilution.
- This suggests improved accuracy of noninvasive Doppler assessment in this patient cohort.
Conclusions:
- Noninvasive Doppler echocardiography is a valuable tool for estimating cardiac output in patients with advanced chronic heart failure.
- Doppler echocardiography offers a reliable alternative to invasive methods, particularly when compared to thermodilution in this population.
Abstract:
Noninvasive cardiac output estimation by Doppler echocardiography was compared with thermodilution and Fick oxygen methods in 73 patients with advanced chronic congestive heart failure due to dilated cardiomyopathy. In these patients, Doppler echocardiographic measurements showed a closer agreement with Fick measurements than that of thermodilution.