LV Calculator
Use our free Lvcalculator Calculator to get personalized health results. Based on validated medical formulas and clinical guidelines.
Reviewed by Rahul Singh, Health & Wellness Specialist
Formula
EF = (EDV - ESV) / EDV x 100; Teichholz: V = 7D^3 / (2.4 + D)
Where EF = Ejection Fraction, EDV = End-Diastolic Volume, ESV = End-Systolic Volume. The Teichholz formula estimates ventricular volume from the internal diameter D (in cm). Fractional Shortening = (LVEDD - LVESD) / LVEDD x 100. LV Mass uses the Devereux ASE-corrected formula incorporating septal thickness, posterior wall thickness, and LV diameter.
Worked Examples
Example 1: Normal LV Function Assessment
Problem:A 45-year-old patient has echocardiographic measurements: LVEDD = 48 mm, LVESD = 30 mm, IVSd = 10 mm, PWd = 10 mm, HR = 70 bpm. Calculate LV function parameters.
Solution:Teichholz EDV = 7 x (4.8)^3 / (2.4 + 4.8) = 7 x 110.59 / 7.2 = 107.5 mL\nTeichholz ESV = 7 x (3.0)^3 / (2.4 + 3.0) = 7 x 27 / 5.4 = 35.0 mL\nStroke Volume = 107.5 - 35.0 = 72.5 mL\nEjection Fraction = 72.5 / 107.5 x 100 = 67.4%\nFractional Shortening = (48 - 30) / 48 x 100 = 37.5%\nCardiac Output = 72.5 x 70 / 1000 = 5.08 L/min
Result:EF: 67.4% (Normal) | SV: 72.5 mL | CO: 5.08 L/min | FS: 37.5%
Example 2: Dilated Cardiomyopathy Assessment
Problem:A 62-year-old patient with heart failure: LVEDD = 68 mm, LVESD = 58 mm, IVSd = 8 mm, PWd = 8 mm, HR = 95 bpm.
Solution:Teichholz EDV = 7 x (6.8)^3 / (2.4 + 6.8) = 7 x 314.43 / 9.2 = 239.2 mL\nTeichholz ESV = 7 x (5.8)^3 / (2.4 + 5.8) = 7 x 195.11 / 8.2 = 166.5 mL\nStroke Volume = 239.2 - 166.5 = 72.7 mL\nEjection Fraction = 72.7 / 239.2 x 100 = 30.4%\nFractional Shortening = (68 - 58) / 68 x 100 = 14.7%\nRWT = (2 x 8) / 68 = 0.24
Result:EF: 30.4% (Reduced - HFrEF) | SV: 72.7 mL | FS: 14.7% | Eccentric Hypertrophy
References
Reviewed by Rahul Singh, Health & Wellness Specialist · Editorial policy