Canonical: https://echosuite.app/guides/diastolic-ms/

# Diastolic assessment in mitral stenosis

Explore the dedicated filling-pressure pathway for mitral stenosis and review its acquisition guidance and sources.

Created by [Mohammed Kamareddine, MD](https://echosuite.app/about/) · [Sources & educational scope](https://echosuite.app/about/)

[Open interactive calculator →](https://echosuite.app/calculators/#diastolic-ms)

## Method

2025 ASE Table 7 · IVRT, mitral A velocity and IVRT/T(E−e′)

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

### IVRT  ms

Spectral Doppler timing

- Use a sweep speed that clearly shows the interval boundaries.
- Measure from the specified onset to offset.
- Average representative beats using consistent rhythm handling.

### Mitral A peak velocity  m/s

PW Doppler at the mitral leaflet tips

- Place the PW sample between the mitral leaflet tips.
- Record at end-expiration with a clear E and A wave.
- Measure the requested peaks or trace the requested envelope.

### IVRT / T(E−e′)

Spectral Doppler timing

- Use a sweep speed that clearly shows the interval boundaries.
- Measure from the specified onset to offset.
- Average representative beats using consistent rhythm handling.

## Sources and method context

American Society of Echocardiography · 2025 · Evaluation of Left Ventricular Diastolic Function and HFpEF Diagnosis · Table 7 p. 20 · mitral-stenosis section pp. 19–20

[Primary reference](https://www.asecho.org/wp-content/uploads/2025/07/Left-Ventricular-Diastolic-Function.pdf)

- MS-specific indicators · Table 7 · PDF p. 20

IVRT, mitral A velocity, and IVRT/T(E−e′) thresholds.

- General-pathway exclusion · Section 15A(a) · PDF pp. 19–20

Mitral stenosis requires a dedicated approach rather than the general E/e′ pathway.

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)
- [Left atrial pressure calculator: E/e′ method](https://echosuite.app/guides/lap-ee/)
- [Left atrial pressure calculator: mitral regurgitation velocity](https://echosuite.app/guides/lap-mr/)
- [Left atrial volume index calculator: LAVI](https://echosuite.app/guides/la-size/)
- [Left ventricular pressure calculator](https://echosuite.app/guides/lv-pressure/)

[All echo guides](https://echosuite.app/guides/) · [Learning paths](https://echosuite.app/learn/)