Appropriate patients with a new NQMI were randomized to an early `` invasive '' strategy ( routine coronary angiography followed by myocardial revascularization , if feasible ) versus an early `` conservative '' strategy ( noninvasive , predischarge stress testing with planar thallium scintigraphy and radionuclide ventriculography ) , where the use of coronary angiography and myocardial revascularization was guided by the development of ischemia ( clinical course or results of noninvasive tests , or both ) .
