Systolic indentation of the left ventricular outflow tract in Eisenmenger syndrome.

Marked bulging of the interventricular septum toward the left ventricle has been described as a reliable index of right ventricular systolic hypertension. We report a patient with Eisenmenger syndrome who has systolic aneurysmal protrusion of the interventricular septum into the left ventricular outflow tract. To our knowledge, this is the first report of systolic indentation of the left ventricular outflow tractin a patient with right ventricular pressure/volume overload.