Prosthetic Mitral Valve Effective Orifice Area (EOA)

[CP_CALCULATED_FIELDS id=”36″]

– share this tool – [scriptless]

[sc name =”calculator-footer”]

Data Acquisition

Prosthetic mitral valve EOA

Reference Values

Prosthetic MV Stenosis
EOA (cm2) DVI
Normal ≥2.0 <2.2
Possible stenosis 1-2 2.2-2.5
Suggest significant stenosis <1.0 >2.5

Formulas

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

Definitions

VTILVOT Velocity-time integral at LVOT
LVOT Left ventricular outflow tract diameter
VTIPrMV Velocity-time integral across prosthetic mitral valve
EOA Effective Orifice Area
DVI Doppler Velocity Index
MV Mitral valve

Related Tools

[sc name=”related-tools-mv”]

Reference

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

Disclaimer

[sc name=”disclaimer-illus”]

[sc name =”info-footer”]