August 3, 2009Current Opinion in Cardiology
Three-dimensional echocardiography for assessment of mitral valve regurgitation
Key result
Three-dimensional echocardiography formulas demonstrate stronger correlation, less underestimation, and better accuracy than two-dimensional methods for quantifying mitral regurgitation severity.
Why the study?
Does three-dimensional echocardiography improve the accuracy of quantifying mitral regurgitation severity compared to two-dimensional echocardiography?
Key Points
- To review technological advances in three-dimensional echocardiography and evaluate its performance in quantifying mitral regurgitation severity compared to standard two-dimensional techniques.
- Synthesized evidence evaluating three-dimensional color Doppler flow, geometric variation of the proximal flow convergence region, and vena contracta area imaging.
- Assessed quantitative utility and clinical feasibility of three-dimensional matrix transesophageal echocardiography alongside direct effective regurgitant orifice measurement.
- Demonstrated that the proximal flow convergence region varies dynamically among hemispheric, hemispheroid, and hemi-ellipsoid shapes, rendering two-dimensional geometric assumptions inaccurate.
- Showed that three-dimensional quantification algorithms provide stronger correlations, less underestimation, and superior overall accuracy compared to the two-dimensional proximal isovelocity surface area method.
- Confirmed that direct three-dimensional measurement of the vena contracta area and effective regurgitant orifice is clinically feasible without relying on simplified geometric formulas.
Structured PICO
Does three-dimensional echocardiography improve the accuracy of quantifying mitral regurgitation severity compared to two-dimensional echocardiography?
E
Exposure
Three-dimensional echocardiography (3D color flow, 3D formulas, direct measurement of effective regurgitant orifice)
C
Comparator
Two-dimensional echocardiography (2D proximal isovelocity surface area method)
O
Outcome
Accuracy of quantifying mitral regurgitation severitysurrogate
Three-dimensional echocardiography provides more accurate quantification of mitral regurgitation severity than traditional two-dimensional methods by overcoming geometric assumptions.
Authors
Discussion
No takes yet. Share an insight, caveat, or question.
Implication
May support three-dimensional echocardiography for mitral regurgitation quantification; leaves open randomized validation before practice change.
Cite This Study
Sugeng et al. (2009) conducted a review in Mitral regurgitation. Three-dimensional echocardiography vs. Two-dimensional echocardiography was evaluated on Quantification of mitral regurgitation severity. Three-dimensional echocardiography formulas demonstrate stronger correlation, less underestimation, and better accuracy than two-dimensional methods for quantifying mitral regurgitation severity.