Prosthetic Mitral Valve Effective Orifice Area (EOA)

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Data Acquisition

Prosthetic mitral valve EOA

Reference Values

Prosthetic MV Stenosis
EOA (cm2)DVI
Possible stenosis1-22.2-2.5
Suggest significant stenosis<1.0>2.5


\[EOA = \frac{\pi (LVOT/2)^2 \times VTI_{LVOT}}{VTI_{PrMV}} \]

\[DVI = \frac{VTI_{PrMV}}{VTI_{LVOT}}\]


VTILVOTVelocity-time integral at LVOT
LVOTLeft ventricular outflow tract diameter
VTIPrMVVelocity-time integral across prosthetic mitral valve
EOAEffective Orifice Area
DVIDoppler Velocity Index
MVMitral valve


1.Zoghbi WA, et al. Recommendations for evaluation of prosthetic valves with echocardiography and Doppler ultrasound. J Am Soc Echocardiogr 2009; 22(9):994-995. Full text


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Developer & Illustrator: Sirikarn Napan, MD, FACC