LVEF
Also written as: LVEF — Left Ventricular Ejection Fraction
Left ventricular ejection fraction; percentage of blood pumped out of the left ventricle with each heartbeat.
Full Definition
Left ventricular ejection fraction is a key measurement in cardiovascular imaging that quantifies the percentage of blood volume ejected from the left ventricle during systole. Normal LVEF ranges from 50-70%, with values below 40% indicating systolic dysfunction. This parameter is crucial for diagnosing heart failure, guiding treatment decisions, and assessing prognosis. LVEF is measured through various imaging modalities including echocardiography, cardiac MRI, and nuclear imaging.
Usage
Usage note: Always express as a percentage. May be written as 'LV ejection fraction' in some contexts.
In Context
- "The patient's LVEF improved from 25% to 45% following optimal medical therapy." — Cardiology follow-up report
- "Cardiac MRI revealed an LVEF of 35% with evidence of prior myocardial infarction." — Imaging study report