idea of measuring the ejection fraction? The calculation was first proposed by Dr. Stuart Bartle at the American College of Cardiology meeting in 1965 (1). In a subsequent paper, he coined the term “ejected fraction” (Online Appendix A).
Where does ejection fraction come from?
Ejection fraction (EF) refers to how well your left ventricle (or right ventricle) pumps blood with each heart beat. Most times, EF refers to the amount of blood being pumped out of the left ventricle each time it contracts. The left ventricle is the heart's main pumping chamber. Your EF is expressed as a percentage.
Who discovered CHF?
In the 17th century, William Harvey was able to accurately describe the role of the heart in circulation, which provided early insight into the etiology of congestive heart failure. He observed that a dilated ventricle was associated with heart failure.
