Related Experiment Videos
[Evaluation of cardiac output by Doppler echocardiography. Basic principles and practice]
B Denis1, G Vanzetto, B Bertrand
1Clinique Cardiologique et Urgences Cardiologiques, CHU, Grenoble.
Annales De Cardiologie Et D'Angeiologie
|May 1, 1992
Summary
Doppler-echocardiography accurately measures cardiac output at valve orifices, offering a quantitative assessment of valve regurgitation. This method correlates well with invasive techniques, enhancing diagnostic capabilities.
Area of Science:
- Cardiovascular Medicine
- Diagnostic Imaging
- Hemodynamics
Context:
- Cardiac output measurement is crucial for assessing cardiovascular health.
- Traditional methods often involve invasive procedures.
- Doppler-echocardiography offers a non-invasive alternative for hemodynamic assessment.
Purpose:
- To evaluate the utility of Doppler-echocardiography for cardiac output measurement.
- To establish a quantitative approach for assessing valve regurgitation.
- To recommend optimal techniques for Doppler-echocardiography measurements.
Summary:
- Doppler-echocardiography enables cardiac output measurement at each valve orifice, providing quantitative data on valve regurgitation.
- Key parameters include valve orifice area, trans-valvular velocity spectrum, ejection/filling duration, and heart rate.
- The technique demonstrates excellent correlation with invasive reference methods.
Impact:
- Facilitates non-invasive, quantitative assessment of valve regurgitation.
- Supports the exclusive use of pulsed Doppler and 2D imaging for valve orifice measurement.
- Proposes a simplified method for mitral valve area measurement using TM records.