What is Ejection Fraction?
Ejection Fraction (EF) is a measurement of the percentage of blood leaving the heart with each contraction. It is commonly used to assess left ventricular systolic function.
Normal Ejection Fraction Range
- ≥ 55% – Normal
- 45–54% – Mildly Reduced
- 35–44% – Moderately Reduced
- < 35% – Severely Reduced
EF is commonly measured using echocardiography and is essential in diagnosing heart failure and cardiomyopathy.
Ejection Fraction Calculator
Ejection Fraction (EF) is a key measure of cardiac function that indicates the percentage of blood pumped out of the ventricle during each contraction.
What is End-Diastolic Volume (EDV)?
EDV is the volume of blood in the ventricle at the end of filling (diastole). It represents preload.
What is End-Systolic Volume (ESV)?
ESV is the volume of blood remaining in the ventricle after contraction.
How to Calculate Ejection Fraction?
EF = (EDV − ESV) ÷ EDV × 100
Related tools: Stroke Volume Calculator | Cardiac Index Calculator