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 (Dumesnil Method)

Calculation


LVEDD mm
LVOT mm
VTI1 cm


SV mL
LVEDV mL
LVEF %
Calculate

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Information

The method of calculating left ventricular ejection fraction (LV EF) consists of dividing Doppler derived stroke volume (SV) in the LV outflow track (LVOT) by LV end-diastolic volume (LVEDV) calculated by Teichholz’s formula.

SV
= π * (
LVOT
2
)2 * VTI1
LVEDV
=
(7 * LVEDD3)
(2.4 + LVEDD)
LVEF
=
SV
LVEDV
LVEDD LV end-diastolic dimension
LVOT Left ventricular outflow tract diameter
VTI1 LVOT subvalvular velocity time integral
SV Stroke volume
LVEDV LV end-diastolic volume
LVEF LV ejection fraction [%]


References


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