Use chamber volumes for fast pumping analysis. Review derived metrics and practical reference ranges clearly. Export results inspect graphs and study examples with confidence.
| Case | EDV (mL) | ESV (mL) | HR (bpm) | BSA (m²) | LVEDD (cm) | LVESD (cm) | EF (%) | SV (mL) | CO (L/min) |
|---|---|---|---|---|---|---|---|---|---|
| Example A | 120 | 50 | 72 | 1.90 | 5.4 | 3.6 | 58.33 | 70 | 5.04 |
| Example B | 150 | 90 | 80 | 2.10 | 5.5 | 4.4 | 40.00 | 60 | 4.80 |
| Example C | 100 | 35 | 68 | 1.75 | 5.0 | 3.25 | 65.00 | 65 | 4.42 |
Ejection Fraction = ((EDV - ESV) / EDV) × 100
Stroke Volume = EDV - ESV
End-Systolic Fraction = (ESV / EDV) × 100
Cardiac Output = Stroke Volume × Heart Rate ÷ 1000
Cardiac Index = Cardiac Output ÷ Body Surface Area
Fractional Shortening = ((LVEDD - LVESD) / LVEDD) × 100
EDV represents the filled chamber volume before contraction. ESV represents the residual chamber volume after contraction. Their difference gives stroke volume, while the ratio of expelled volume to initial volume gives ejection fraction.
This calculator estimates chamber pumping performance from entered volume values. Lower ejection fraction often reflects reduced forward pumping, while very high values can indicate a hyperdynamic pattern. Reference ranges differ by method, clinical setting, imaging modality, loading conditions, and patient context.
The extra fields help expand the analysis. Heart rate adds cardiac output. Body surface area adds cardiac index. LV dimensions add fractional shortening. These supporting outputs can help compare cases and understand volume mechanics more clearly.
Ejection fraction measures the percentage of chamber volume expelled during contraction. It compares stroke volume with end-diastolic volume and is commonly used to describe pumping efficiency.
Not always. Very low values may suggest weak pumping, but very high values can also appear in hyperdynamic states. Interpretation depends on symptoms, imaging method, loading conditions, and clinical context.
EDV is the filled volume before contraction. ESV is the remaining volume after contraction. A physically meaningful ejection fraction requires ESV to be below EDV.
Stroke volume is the absolute amount pumped in one beat. It is found by subtracting end-systolic volume from end-diastolic volume.
Heart rate is not needed for ejection fraction itself. It is only needed when you want the calculator to estimate cardiac output from stroke volume.
Cardiac index adjusts cardiac output to body size. This helps compare pumping performance between people with different body surface areas.
Fractional shortening estimates contraction from linear chamber dimensions. It is based on LVEDD and LVESD and can support volume-based assessment when those dimensions are available.
No. This calculator only processes entered numbers. Imaging quality, measurement method, rhythm, valve disease, and clinical context still matter for proper interpretation.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.