Key result
The power-velocity integral at the vena contracta accurately measured mitral regurgitant stroke volume in patients, correlating strongly with MRI and 3D echo reference methods (r=0.98).
Why the study?
Does the Doppler power-velocity integral at the vena contracta accurately measure regurgitant flow compared to reference standards in vitro, in vivo, and in patients?
Population
In vitro models, in vivo models, and 23 patients with mitral regurgitation.
Comparison
Measurement of regurgitant flow and stroke… vs Reference standards: direct visual recording of…
Design
Other
Authors
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May offer a Doppler method for mitral regurgitant volume quantification; leaves open prospective validation before clinical use.
Does the Doppler power-velocity integral at the vena contracta accurately measure regurgitant flow compared to reference standards in vitro, in vivo, and in patients?
Effect estimate: r=0.98
The power-velocity integral at the vena contracta provides an accurate, direct measurement of regurgitant flow, overcoming the limitations of standard Doppler techniques.
Buck et al. (2000) studied Mitral regurgitation (n=23). Power-velocity integral at the vena contracta vs. MRI and 3D echocardiography was evaluated on Correlation of calculated mitral regurgitant stroke volume with reference methods (r=0.98). The power-velocity integral at the vena contracta accurately measured mitral regurgitant stroke volume in patients, correlating strongly with MRI and 3D echo reference methods (r=0.98).
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