to assess the 3 year risk of anterior myocardial infarction in patients with left anterior descending coronary artery territory disease ( 30 to 100 % stenosis ) , national heart , lung , and blood institute ( nhlbi ) coronary artery surgery study ( cass ) registry patients were identified who were 1 ) medically treated , and 2 ) had evidence of viable anterior myocardium at the time of baseline angiography .
C0226032
left anterior descending coronary artery
C0018787
heart