Left Ventricular Ejection Fraction (EF)
Historical estimates from LV diameter only, not substitutes for recommended biplane Simpson EF or individual clinical assessment.
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Diameter-derived estimated ejection fraction
The Gibson estimate is not shown because the original coefficients are not available.
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Calculation, limitations and original sources
Equations
Enter LV end-diastolic and end-systolic diameters in mm; convert to cm once for volume. Pombo: EDV = LVDd³ and ESV = LVDs³ (diameters in cm). Teichholz: V(D) = 7D³/(2.4 + D) mL. Both report EF(%) = 100 × (EDV − ESV)/EDV.
Hypothetical example
For LVDd 50 mm and LVDs 30 mm: Pombo EF 78.4%; Teichholz EF about 70.4%.
Limitations and review
Assumptions about ventricular geometry and measurement conditions affect accuracy. A diameter that increases from diastole to systole is invalid. The Gibson formula remains disabled These estimates do not assess disease severity or treatment. Source review date 2026-11-10.