Use of Noninvasive Testing for Ischemia Before Discharge: Recommendations Class I 1. Noninvasive testing for ischemia should be performed before discharge to assess the presence and extent of inducible ischemia in patients with STEMI who have not had coronary angiography and do not have high- risk clinical features for which coronary angiogra- phy would be warranted.577 579 (Level of Evidence: B) Class IIb 1. Noninvasive testing for ischemia might be considered before discharge to evaluate the functional signifi- cance of a noninfarct artery stenosis previously iden- tified at angiography. (Level of Evidence: C) 2. Noninvasive testing for ischemia might be considered before discharge to guide the postdischarge exercise prescription. (Level of Evidence: C) Noninvasive testing for ischemia provides valuable informa- tion about the presence of residual ischemia in patients who have not undergone cardiac catheterization during initial management of STEMI and may be useful in assessing the functional significance of a noninfarct artery stenosis identi- fied at angiography. In the latter instance, stress imaging to localize ischemia would be appropriate.580,581 Exercise test- ing early after STEMI may also be performed to 1) assess functional capacity and the ability to perform tasks at home and at work, 2) evaluate the efficacy of medical therapy, and 3) assess the risk of a subsequent cardiac event. 