Diastolic assessment in hypertrophic cardiomyopathy
Explore the hypertrophic-cardiomyopathy diastolic pathway and its measurement and source context.
Method
2025 ASE Table 7 · integrate E/e′, Ar−A, TR velocity and LAVi
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
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.
Pulmonary vein Ar − mitral A duration 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.
TR peak velocity m/s
CW Doppler through the TR jet
- Search RV inflow, apical four-chamber, and subcostal windows; use the highest well-aligned signal.
- Trace the dense primary edge (‘chin’), not faint overgained noise, and reject truncated triangular envelopes when estimating pressure.
- Average three representative beats; in atrial fibrillation average 5–10 beats and exclude post-pause or post-ectopic velocities.
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.
Sources and method context
American Society of Echocardiography · 2025 · Evaluation of Left Ventricular Diastolic Function and HFpEF Diagnosis · Table 7 p. 20 · HCM section p. 25
- HCM indicators · Table 7 · PDF p. 20
Average E/e′, Ar−A duration, TR velocity, and LAVi thresholds.
- Integrative interpretation · Section 15F · PDF p. 25
Requirement for comprehensive assessment rather than a single-variable diagnosis.
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.