Silent ischemia has been shown to negatively affect prognosis in patients after myocardial infarction. However, long-term outcome data in totally asymptomatic patients is missing and it is unknown whether angioplasty in addition to secondary preventive measures is superior to antiischemic drug therapy in these patients. Therefore, the SWISSI 2 study was started 15 years ago with the aim of comparing the effects of angioplasty with medical therapy on long-term outcome in patients with recent myocardial infarction and silent ischemia.