E/e′ (LV Filling-Pressure Estimate)
E/e′ as an LV diastolic filling-pressure estimate, by the averaged or single-site cutoff (Nagueh 2016).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Mitral-inflow early-diastolic velocity
- 90 cm/s
- Tissue-Doppler e′ velocity
- 6 cm/s
- e′ site
- Average (septal + lateral)/2
Result: E/e′ 15 (average) — elevated LV filling pressure.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Average
- Average E/e′ < 9 normal, 9–14 indeterminate, > 14 elevated LV filling pressure.
- Single-site
- Septal E/e′ > 15, lateral E/e′ > 13 indicate elevated filling pressure. The average is preferred when both walls are sampled.
What you enter
- Mitral-inflow early-diastolic velocity (E)
- Tissue-Doppler e′ velocity
- e′ site
How this is calculated
Nagueh SF, Smiseth OA, Appleton CP, et al. Recommendations for the evaluation of left ventricular diastolic function by echocardiography: an update from the ASE and EACVI. J Am Soc Echocardiogr. 2016;29(4):277-314. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.