Tricuspid stenosis · significance calculator
Explore tricuspid stenosis · significance with the method’s inputs, acquisition guidance and source references. Open the calculator to enter measurements or try an illustrative worked example.
Method
TS reference findings: mean ≥5, PHT ≥190, VTI ≥60, area ≤1
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
Mean tricuspid gradient mmHg
Complete traced CW envelope
- Align through the valve or shunt and record a complete envelope.
- Trace the modal velocity envelope using the machine tool.
- Use the machine-calculated mean gradient in mmHg.
Pressure half-time ms
CW Doppler deceleration slope
- Record a complete inflow or regurgitant CW envelope.
- Trace the deceleration slope using the machine PHT tool.
- Average representative beats and use additional beats in atrial fibrillation.
Tricuspid inflow 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.
Valve area cm²
Enter the measured value in the displayed unit
- 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 · 2023 · Recommendations for the Use of Echocardiography in the Evaluation of Rheumatic Heart Disease · Rheumatic TS anatomy and hemodynamics pp. 13–14 · key points and recommendations p. 14
- PHT area estimate · EAE/ASE valve stenosis 2009 · JASE p. 19 · doi:10.1016/j.echo.2008.11.029
The historical 190/PHT estimate is displayed independently without grading or replacing entered valve area. Right-heart compliance, relaxation, respiration and TR limit this method; the guideline notes less validation than for mitral PHT.
- Acquisition · TS hemodynamic section · PDF p. 14
CW alignment, respiratory and heart-rate effects, and averaging at least five beats.
- Significant-range findings · TS hemodynamic section and key points · PDF p. 14
Mean gradient at least 5 mmHg, inflow VTI at least 60 cm, PHT at least 190 ms, and valve area at most 1.0 cm².
- Integration & limitations · TS key points and recommendations · PDF p. 14
Multiparametric severity assessment, right-atrial and pulmonary-pressure context, associated valve disease, and reduced reliability of PHT-derived area.
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.