Mitral prosthetic valve calculator: EOA, DVI and PPM
Explore effective orifice area, Doppler velocity index and prosthesis–patient mismatch inputs for the mitral prosthesis tool.
Method
EOA = LVOT area × LVOT VTI ÷ MV prosthesis VTI; DVI = MV prosthesis VTI ÷ LVOT VTI
Use the measurement units shown below. Some fields apply only to a selected method or condition; follow the interactive tool’s method choices. The interactive tool keeps missing measurements incomplete and provides its method-specific results and reference context.
Measurements and acquisition
Measurement
Enter the measured value in the displayed unit
- EOA & DVI
- Patient–prosthesis mismatch
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
LVOT VTI cm
Pulsed-wave Doppler
- Place the sample volume at the specified annulus or outflow tract.
- Align the Doppler beam with flow and record a clean envelope.
- Trace the modal velocity envelope and use the reported VTI.
Mitral prosthesis VTI cm
Continuous-wave Doppler trace
- Use the same aligned CW recording as the peak velocity.
- Trace the outer edge of the dense envelope for the relevant phase.
- Use the machine-reported VTI in centimeters.
LVOT diameter cm
2D echo · inner-edge measurement
- Use the specified view and cardiac phase.
- Align the calipers perpendicular to the structure’s long axis.
- Measure inner edge to inner edge and avoid oblique foreshortening.
Body surface area m²
Record the units, date and measurement source
- Use measured height and weight where feasible. Record the units, date and whether a value was reported or estimated.
- Fluid status and weight changes affect BSA. Document any substituted weight; do not silently replace measured weight with ideal or dry weight.
- Use the unit named by the field. BSA is in m²; height and weight can be converted in the Body surface area calculator. Keep the formula with serial indexed results.
Body mass index kg/m²
Enter the measured value in the displayed unit · Optional
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
Valve structure & motion
Enter the measured value in the displayed unit
- Normal
- Abnormal
- Uncertain
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
EOA vs model / size reference
Enter the measured value in the displayed unit
- Within 1 SD
- Outside 1 SD
- Not known
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
Continuity volume matching
Enter the measured value in the displayed unit
- Valid · no significant MR / AR
- Limited
- Uncertain
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
Stable postoperative baseline
Enter the measured value in the displayed unit
- Stable
- New change
- Not known
- Confirm the variable matches the selected formula.
- Use the unit displayed beside the field.
- Keep measurements from the same representative hemodynamic state.
Sources and method context
American Society of Echocardiography · 2024 · Guidelines for the Evaluation of Prosthetic Valve Function With Cardiovascular Imaging · EOA and DVI JASE pp. 9–10 · mitral evaluation pp. 24–25 · Table 7 p. 20 (BMI-adjusted PPM and prerequisites) · Table 11 p. 27
- Mitral EOA, DVI and PPM · Section III.B(i) · JASE pp. 24–25
EOA from LVOT stroke volume / mitral VTI; inverse VTI ratio for DVI. Table 7 supplies BMI-adjusted mitral PPM bands, requiring normal structure/motion and EOA within 1 SD of the model/size reference.
- Limitations · Section III.B(i) · JASE pp. 24–25
Important MR can underestimate LVOT-based mitral EOA; significant AR also breaks volume matching. PHT-derived EOA is invalid. Integrate prosthesis type, size, flow, rhythm and baseline.
Catalogue review status: Exact guideline locator mapped · clinical sign-off pending
These pages describe the educational tool. Interpret measurements with the complete clinical context and the method’s acquisition limitations.
Keep exploring
- Apical four chamber acquisition guide · Open in Probe Lab
- Apical five chamber acquisition guide · Open in Probe Lab
- Aortic prosthetic valve calculator: EOA, DVI and PPM
- Surgical aortic prosthesis · obstruction calculator
- Aortic prosthesis · serial comparison calculator
- Mitral prosthesis · obstruction calculator