BACKGROUND The complete continuous-wave Doppler mitral regurgitant velocity curve
should allow reconstruction of the ventriculoatrial (VA) pressure gradient from mitral valve …

Objectives. We previously demonstrated experimentally that the mitral regurgitant velocity
spectrum can be used to estimate left ventricular pressure throughout systole and may …

BACKGROUND The instantaneous pressure gradient between the left ventricle and left
atrium during systole can be calculated from the mitral regurgitation Doppler velocity curve …

In this study, we explored the use of continuous wave Doppler-echocardiography guided by
color Doppler flow-mapping as a method for noninvasively calculating the rate of pressure …

BACKGROUND The time constant of isovolumic relaxation (tau) is an important parameter of
ventricular diastolic function, but the need for invasive measurement with high-fidelity …

In patients with heart disease, changes in left ventricular filling pressures produce alterations
in the Doppler transmitral flow velocity and isovolumetric relaxation time. This investigation …

Left ventricular dp/dt is a useful isovolumic index for evaluating acute directional changes in
myocardial contractility. To test the hypothesis that Doppler echocardiography can measure …

Pulsed and continuous wave Doppler velocity measurements are routinely used in clinical
practice to assess severity of stenotic and regurgitant valves or to estimate intracavitary …

OBJECTIVES:: The aim of this study was to estimate left ventricular end-diastolic pressure
(LVEDP) noninvasively by tissue Doppler imaging and color M-mode echocardiography …

Background—Conventional Doppler measurements have limitations in the prediction of left
atrial pressure (LAP) in patients with mitral valve disease (MVD), given the confounding …