Canonical: https://echosuite.app/guides/mitral-prosthesis/ # 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. Created by [Mohammed Kamareddine, MD](https://echosuite.app/about/) · [Sources & educational scope](https://echosuite.app/about/) [Open interactive calculator →](https://echosuite.app/calculators/#mitral-prosthesis) ## 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 [Primary reference](https://www.asecho.org/wp-content/uploads/2024/01/PIIS0894731723005333.pdf) - 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](https://echosuite.app/guides/views/apical-four-chamber/) · [Open in Probe Lab](https://echosuite.app/#a4c) - [Apical five chamber acquisition guide](https://echosuite.app/guides/views/apical-five-chamber/) · [Open in Probe Lab](https://echosuite.app/#a5c) - [Aortic prosthetic valve calculator: EOA, DVI and PPM](https://echosuite.app/guides/aortic-prosthesis/) - [Surgical aortic prosthesis · obstruction calculator](https://echosuite.app/guides/aortic-prosthesis-screen/) - [Aortic prosthesis · serial comparison calculator](https://echosuite.app/guides/aortic-prosthesis-serial/) - [Mitral prosthesis · obstruction calculator](https://echosuite.app/guides/mitral-prosthesis-screen/) [All echo guides](https://echosuite.app/guides/) · [Learning paths](https://echosuite.app/learn/)