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[Quantification of valvular regurgitation by the convergence zone method]
Ch Tribouilloy1, B Gallet, E Abergel
1Service de cardiologie B, centre hospitalier, avenue René Laennec, 80054 Amiens.
Archives Des Maladies Du Coeur Et Des Vaisseaux
|July 23, 2003
Summary
The convergence zone method quantifies valvular regurgitation, like mitral insufficiency, efficiently. This echocardiographic technique is valuable for assessing severe regurgitation, even with arrhythmias or combined valve disease.
Area of Science:
- Cardiovascular Medicine
- Echocardiography
- Valvular Heart Disease
Background:
- Valvular regurgitation, especially mitral insufficiency, requires accurate quantification.
- Existing methods may be limited by factors like atrial fibrillation or concomitant valve stenosis.
Purpose of the Study:
- To describe the utility and application of the convergence zone method for quantifying valvular regurgitation.
- To highlight its advantages in specific clinical scenarios.
Main Methods:
- Utilizes the measurement of output at the isovelocity hemisphere level.
- Calculates regurgitant orifice surface (SOR) and regurgitant volume per beat (VR).
Main Results:
- The method is quick, requires minimal training, and is valid in atrial fibrillation and mixed regurgitation-stenosis.
- It is primarily used for severe regurgitation (angiographic grade 4) with specific SOR and VR thresholds for mitral, aortic, and tricuspid insufficiency.
Conclusions:
- The convergence zone method is a practical and reliable tool for quantifying severe valvular regurgitation.
- Its robustness in challenging conditions makes it a valuable echocardiographic technique.