Assessment of left ventricular systolic function by velocity vector imaging.

Indian Heart Journal
Narayanan KumarJacob V Jose

Abstract

To study the usefulness of a novel echocardiographic technique, velocity vector imaging (VVI) in the measurement of left ventricular ejection fraction (LVEF). Ejection fraction measured by echocardiography forms the cornerstone in the assessment of LV systolic function. Errors in measurement of EF by routine two-dimensional echocardiography (2D ECHO) limit its utility. The VVI is a new technology which uses speckle tracking and other algorithms to track the endocardial border. This may help in more accurate assessment of EF. Global and regional LVEF was measured in 49 patients using VVI, 2D ECHO and radionuclide-gated single photon emission computed tomography (SPECT). Results were categorised as normal, mild, moderate, or severe LV systolic dysfunction based on American Society of ECHO classification. The results were analysed by appropriate statistical tests for correlations. The mean EF was 35 ± 12.08% by VVI, 54.2 ± 19.51% by SPECT (P< 0.001 vs VVI) and 50.3 ± 8.92% by 2D ECHO (P < 0.001 vs VVI). There was weak linear positive correlation between EF measured by VVI and the other modalities (Pearson's correlation coefficient 0.577 for SPECT and 0.573 for 2D; P=0.01). The VVI systematically underestimated the EF compared to S...Continue Reading

References

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Aug 23, 2003·Journal of the American College of Cardiology·Jeptha P CurtisHarlan M Krumholz
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Dec 2, 2008·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Manish BansalThomas H Marwick

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Citations

May 11, 2012·Indian Heart Journal·S Shrivastava, B Paul
Oct 30, 2012·Indian Heart Journal·Margaret D'Mello, Kurudamannil A Abraham
Sep 12, 2020·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Jing GaoJ Brian Fowlkes

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