Final answer:
The normal ejection fraction is greater than 60%.
Step-by-step explanation:
A normal ejection fraction, representing the percentage of blood pumped out of the heart's left ventricle with each contraction, is generally considered greater than 50%. The commonly used threshold for normal ejection fraction is 60%. This means that at least 60% of the blood in the left ventricle is ejected into the circulatory system during each heartbeat. Ejection fraction serves as a crucial indicator of cardiac function, and values below 50% may suggest compromised heart function. Clinicians often use imaging techniques like echocardiography to measure ejection fraction, informing diagnoses and treatment strategies for various heart conditions.