The writing committee emphasizes that this change should not be interpreted as endorsing the routine performance of multivessel PCI in all patients with STEMI and multivessel disease. Rather, when considering the indications for and timing of multivessel PCI, physicians should integrate clinical data, lesion 2015 Focused Update Recommendation Comment Class III: Harm Class IIb PCI should not be performed in a noninfarct artery at the time of primary PCI in patients with STEMI who are hemodynamically stable (11 13). (Level of Evidence: B) PCI of a noninfarct artery may be considered in selected patients with STEMI and multivessel disease who are hemodynamically stable, either at the time of primary PCI or as a planned staged procedure (11 24). (Level of Evidence: B-R) Modi ed recommendation (changed class from III: Harm to IIb and expanded time frame in which multivessel PCI could be performed). PCI indicates percutaneous coronary intervention; and STEMI, ST-elevation myocardial infarction. J A C C V O L . 6 7 , N O . 1 0 , 2 0 1 6 Levine et al. severity/complexity, and risk of contrast nephropathy to determine the optimal strategy. The preceding discussion and recommendations apply to the strategy of routine PCI of noninfarct related arteries in hemodynamically stable patients. Recommendations in the 2013 STEMI guideline with regard to PCI of a non infarct-related artery at a time separate from primary PCI in patients who have spontaneous symptoms and myocardial ischemia or who have intermediate- or high- risk ndings on noninvasive testing (Section 6.3 of that guideline) remain operative. 