Ejection fraction is the percentage of how much blood the left ventricle pumps out with each contraction.

This indication of how well your heart is pumping out blood can help to diagnose and track heart failure.

An ejection fraction of 55% or higher is considered normal below this, its said to have reduced.

**Formula to calculate ejection fraction.**

EDV is the volume of the blood at the end of a diastole.

ESV is the volume of the blood at the end of a systole.

**Example:**

Suppose a patient’s EDV is 120ml and the ESV is 80 ml. Calculate the patient’s ejection fraction.

Therefore, the patient’s is 50%.