BACKGROUND Peak dP/dt is a good index of ventricular performance that is not influenced
by afterload, wall motion abnormalities, or the variations in ventricular anatomy and …

BACKGROUND Maximal ventricular power (PWRmax) reflects contractile state and has the
potential to be noninvasively determined. However, its sensitivities to preload, afterload …

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 …

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

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 …

Right ventricular systolic function is difficult to assess by Doppler echocardiography. We
studied 14 patients with tricuspid regurgitation on Doppler echocardiographic examination …

The maximal negative peak of the first derivative of left ventricular pressure was examined
as an index of the end of ventricular ejection by comparing it with the end of aortic flow …

A simple, reproducible, noninvasive Doppler index for the assessment of overall cardiac
function has been described previously. The purpose of this study was to correlate the …

Although slightly affected by alterations in preload, the maximum first derivative of left
ventricular pressure with respect to time, Max (dP/dt), is widely regarded as a simple and …

We compared the left ventricular Tei index measured by tissue Doppler imaging (TDI) to that
obtained by pulsed Doppler (PW) in patients with congenital heart disease. In 40 …