EchocardiographyExercise StressMiscEchocardiography
Aortic Valve Velocity RatioLV EF (Modified Quinones Equation)Myocardial Performance Index (RV)
AVA (Continuity Equation VTI)LV EF (Simplified Quinones Equation)PCWP by E/Ea (Nagueh Formula)
AVA (Continuity Equation VMax)LV Fractional ShorteningPISA (Mitral regurgitation)
dP/dt (LV contractility)LV Mass and LV Mass IndexPISA (Mitral stenosis)
dP/dt (RV contractility)Mitral valve area (PHT)Qp/Qs
Left atrial pressure (MR)Mitral Valvuloplasty Score (MGH)RVSP (TR)
LA Volume (Biplane Method)Modified Bernoulli EquationStroke Volume, Cardiac Output
LV EF (Dumesnil Method)Myocardial Performance Index (LV)
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LV Ejection Fraction (Simplified Quinones Equation)

Calculation


LVEDD mm
LVESD mm
Apex


LVEF %
Normal >55-60% %
Calculate

Clear
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Information

An even simpler adaptation uses the commonly measured end-diastolic and end-systolic diameters of the LV in the parasternal long axis view, with a correction of the apex as follows...

LVEF =
LVEDD2 - LVESD2
LVEDD2
* 100% + K

Variable Definition
Input
LVEDD LV end-diastolic dimension (mm)
LVESD LV end-systolic dimension (mm)
K Correction for apical contraction
+10% Normal apex
+5% Hypokinetic apex
+0% Akinetic apex
-5% Dyskinetic apex
-10% Apical aneurysm
Output
LVEF Ejection Fraction (%)
Normal >55-60%

References


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