Intravascular ultrasound for angiographically indeterminant left main coronary artery disease.

The precise diagnosis of the presence of significant left main coronary artery disease has profound prognostic and therapeutic implications. Coronary cineangiography has shown to be imprecise and inaccurate to determine the percent stenosis of the left main coronary artery. We report a case with significant left main coronary artery disease in whom coronary cineangiography was in discordance with the clinical data and intravascular ultrasonography. Based on the intravascular ultrasound findings, the patient underwent coronary artery bypass graft surgery. Therefore, the intravascular ultrasonography may be the procedure of choice for assessing indeterminant left main coronary artery lesions by coronary angiography

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