What does ejection fraction measure?

Ejection fraction is a key measurement used to assess the heart's efficiency and functionality, specifically focusing on the left ventricle, which is crucial for pumping oxygenated blood to the body. It quantifies the percentage of blood that is pushed out of the left ventricle during each heartbeat relative to the total volume of blood that is present in that chamber before contraction. Generally, a normal ejection fraction is between 55% and 70%, indicating that a substantial amount of blood is effectively being circulated.

Understanding this measurement is crucial for diagnosing and managing various heart conditions, such as heart failure, as it directly relates to how well the heart is functioning in its role as a pump. By identifying what percentage of blood is ejected, healthcare professionals can infer details about cardiac health and guide treatment options accordingly.