Left Ventricular Systolic Dysfunction

Left ventricular systolic dysfunction is defined in terms of ejection fraction, a good clinical indicator of ventricular systolic function. Normal ejection fraction is 0.50 or more (50%). Left ventricular systolic dysfunction is generally defined as an ejection fraction equal to or less than 0.40 (40%), an arbitrary definition based on criteria used in studies such as the SOLVD study.