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

# Diastolic assessment with a left ventricular assist device

Explore the dedicated LV assist device (LVAD) pathway, with its own measurement inputs and source qualifications.

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

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

## Method

2025 ASE Table 7 · Doppler, right-heart pressure and interatrial septal position

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

### Mitral E/A ratio

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.

### Right atrial pressure  mmHg

Contemporaneous cuff or invasive value

- Use a pressure obtained in the same hemodynamic state as the echo.
- Confirm the value is entered in mmHg.
- Do not mix values acquired under different loading conditions.

### PASP  mmHg

Contemporaneous cuff or invasive value

- Use a pressure obtained in the same hemodynamic state as the echo.
- Confirm the value is entered in mmHg.
- Do not mix values acquired under different loading conditions.

### Average E/e′

PW tissue Doppler at the mitral annulus

- Place the sample at the septal or lateral mitral annulus.
- Use tissue-Doppler settings and align with annular motion.
- Measure the early diastolic e′ peak and average representative beats.

### Septal E/e′

PW tissue Doppler at the mitral annulus

- Place the sample at the septal or lateral mitral annulus.
- Use tissue-Doppler settings and align with annular motion.
- Measure the early diastolic e′ peak and average representative beats.

### LA volume index  mL/m²

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.

### Interatrial septum

Enter the measured value in the displayed unit

- Neutral
- Bulges right
- Bulges left
- 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 · 2025 · Evaluation of Left Ventricular Diastolic Function and HFpEF Diagnosis · Table 7 · PDF p. 20

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

- LVAD pressure indicators · Table 7 · PDF p. 20

E/A, RAP, PASP, E/e′, LAVi, and interatrial-septal position relationships.

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/)