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Left Ventricular Ejection Fraction

Meaning

Left Ventricular Ejection Fraction (LVEF) is a crucial clinical measurement that quantifies the efficiency of the heart’s primary pumping action, specifically the percentage of blood ejected from the left ventricle with each systolic contraction. It serves as a fundamental index of myocardial contractility and overall global cardiac function, providing essential diagnostic and prognostic information for patients with heart disease. A normal LVEF typically ranges between 55% and 70%, and a value below this range is indicative of impaired systolic function, which can be influenced by chronic conditions, including specific hormonal imbalances. Clinicians rely on this metric, often measured via echocardiography, to guide therapeutic interventions and assess a patient’s cardiovascular reserve.