Left Ventricular Outflow Tract Obstruction

Left ventricular outflow tract obstruction (LVOTO) can occur at the valvular, subvalvular, or supravalvular level. In general, there is an obstruction to forward flow which increases afterload, and if untreated, can result in hypertrophy, dilatation, and eventual failure of the left ventricle. In the United States, most cases of LVOT obstruction are congenital in individuals younger than 50 years of age.[1]