Normal value of ejection fraction EF
Apr 08, 2023
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
Ejection fraction is an important indicator for assessing cardiac systolic function, representing the proportion of blood ejected from the left ventricle with each heartbeat. Normally, the ejection fraction should be above 50%. Specifically, ejection fraction refers to the ratio of the volume of blood pumped out of the left ventricle during a contraction to the volume of blood in the left ventricle at the end of diastole, and it is typically measured using echocardiography.
Under normal circumstances, the ejection fraction (EF) should be above 50%.
Ejection fraction is an important indicator for assessing cardiac systolic function, representing the proportion of blood pumped out of the left ventricle with each heartbeat. Specifically, ejection fraction refers to the ratio of the volume of blood ejected from the left ventricle during one contraction to the end-diastolic volume of the left ventricle, typically measured using echocardiography. In healthy individuals, the ejection fraction generally ranges between 50% and 70%, with 50%–55% considered the lower limit of normal and values above 70% regarded as the upper limit of normal. Ejection fraction reflects the effectiveness of the heart's systolic function; a value below the normal range may indicate impaired systolic function and an increased risk of heart disease. Common conditions that can lead to reduced ejection fraction include myocardial infarction, cardiomyopathy, and valvular heart disease.
It should be noted that ejection fraction is only one parameter used to evaluate cardiac systolic function and cannot be used alone to diagnose heart disease. A comprehensive assessment must also incorporate other test results and clinical symptoms.
