2.3.2: Ejection fraction:
Left ventricular ejection fraction was calculated from apical four and
two chamber views using biplane disc summation method (Modified Simpsons
method) by tracing the endocardial border manually at end-diastole and
end-systole (planimetry). Ejection fraction was calculated using the
following formula:
\begin{equation}
\text{EF}=\ \ \frac{EDV-ESV}{\text{EDV}}\text{\ \ }X\ \ \ 100\nonumber \\
\end{equation}Where EDV represent left ventricular end-diastolic volume, ESV
represents left ventricular end-systolic volume