.6% vs 84.2%, p = NS). Cardiac survival rate decreased significantly in Group B compared to Group A(89.5% vs 99.0%, p<0.01). This difference in survival rate was due to sudden cardiac death in Group B(7.9% vs 0%, p<0.05). Non-fatal myocardial infarctions occurred in seven patients(6.7%) with revascularization and in one patient(2.6%) with conservative medical therapy, but with no significant difference