ECHONOMY Tools for Echocardiographic Calculations Muhamed Saric, MD, PhD
New York University
calculate mitral regurgitant volume using quantitative Doppler at the
level of the mitral valve and LVOT.
The method uses the standard
Doppler determination of stroke volume across an orifice as the product of
the cross sectional area of the orifice and the VTI at the level of the
orifice. For mitral valve, pulsed Doppler sample volume must be place at the
level of the mitral annulus and not at the mitral leaflet tips (as it is
done for diastology).
Diameter of MV annulus in A4C
Diameter of MV annulus in A2C
Mitral VTI at annular level:
LVOT Diameter (d):
Mitral Valve Area (MVA):
(Assuming that MV is an ellipse).