Key result
The instantaneous velocity-area method showed excellent correlation with aortic flow measurements for determining mitral stroke volume, whereas mean area methods significantly underestimated flow.
Why the study?
Does the instantaneous velocity-area method improve the accuracy of left ventricular inflow measurement compared to methods based on mean mitral valve area in patients undergoing pulsed Doppler echocardiography?
Population
30 patients undergoing pulsed Doppler echocardiography
Comparison
Instantaneous velocity-area method for… vs Two methods based on a mean mitral valve area…
Design
Cross-sectional
Authors
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May improve mitral stroke volume accuracy by pulsed Doppler; hypothesis-generating pending prospective validation.
Observational (n=30)
Does the instantaneous velocity-area method improve the accuracy of left ventricular inflow measurement compared to methods based on mean mitral valve area in patients undergoing pulsed Doppler echocardiography?
The instantaneous velocity-area method using pulsed Doppler echocardiography provides a reliable means for quantitating left ventricular inflow, outperforming methods based on mean mitral valve area.
Tribouilloy et al. (1991) reported an observational. Instantaneous velocity-area method vs. Mean mitral valve area and diastolic velocity integral methods was evaluated on Correlation of mitral stroke volume and inflow with aortic flow measurements. The instantaneous velocity-area method showed excellent correlation with aortic flow measurements for determining mitral stroke volume, whereas mean area methods significantly underestimated flow.
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