Normal Values for Left Ventricular Systolic Function
May 22, 2022
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
The primary indicator for assessing left ventricular systolic function is the left ventricular ejection fraction (LVEF), commonly referred to as the EF value, with a normal range above 50%. The second key parameter is the left ventricular fractional shortening (FS), which reflects the percentage change in the left ventricle’s short-axis diameter during systole; its normal range is 25%–50%. The EF value represents the proportion of blood ejected by the ventricle with each contraction relative to its end-diastolic volume, and a normal EF should exceed 50%.
In daily life, many people seek to better understand their health status by verifying whether certain physiological parameters fall within normal ranges—enabling early prevention and timely treatment. What, then, are the normal values for left ventricular systolic function?
Normal Values for Left Ventricular Systolic Function
The primary indicator for assessing left ventricular systolic function is the left ventricular ejection fraction (LVEF), commonly referred to as the “EF value,” with a normal range of ≥50%. A secondary parameter is the left ventricular fractional shortening (FS), with a normal range of 25%–50%. The EF value represents the percentage of blood ejected by the left ventricle with each contraction relative to its end-diastolic volume; a normal EF should exceed 50%. An EF of 40%–51% indicates mild impairment of cardiac function; 30%–41%, moderate impairment; and <30%, severe impairment.
Left ventricular systolic dysfunction is most commonly caused by hypertension; other potential causes include cardiomyopathy, myocardial infarction, and coronary artery disease. During color Doppler echocardiography, the ejection fraction displayed on the color Doppler image serves as a key reference for evaluating left ventricular systolic function—however, this single parameter alone is insufficient for definitive diagnosis. Additional diagnostic tests—including standard electrocardiography (ECG), 24-hour Holter monitoring (ambulatory ECG), and selected blood biochemical assays—should be performed at a hospital. A specialist physician will integrate these findings to identify the underlying cause of left ventricular systolic dysfunction and initiate appropriate, evidence-based treatment promptly.
In daily life, avoid spicy and irritating foods, drink plenty of water to promote metabolic activity, and engage in moderate outdoor exercise to strengthen immunity. We hope this information proves helpful to you!
