This past year, results of two highly anticipated studies assessing the value of percutaneous coronary intervention (PCI) in patients with ischemic heart disease were reported at the European Society of Cardiology (ESC) and the American Heart Association (AHA) annual scientific sessions. In patients presenting with acute STelevation myocardial infarction (STEMI) and multivessel coronary artery disease, the Complete versus Culprit-Only Revascularization Strategies to Treat Multivessel Disease after Early PCI for STEMI (COMPLETE) trial demonstrated reduction in the future risk of myocardial infarction (MI) and ischemia-driven revascularization with PCI and complete revascularization. 1 Additionally, the International Study of Comparative Health Effectiveness with Medical and Invasive Approaches (ISCHEMIA) trial demonstrated that patients undergoing PCI for stable ischemic heart disease and moderate to severe ischemic burden have an improved quality of life and lower risk of future spontaneous MI with revascularization (predominantly with PCI in the trial). 2,3The multicenter, international COMPLETE trial was presented at the ESC Annual Scientific Sessions in September 2019. In this study, 4,041 STEMI patients who had undergone culprit lesion PCI were randomized to a strategy of complete revascularization with PCI of angiographically significant nonculprit lesions (during the index hospitalization or within 45 days) or culprit-only revascularization. 1 There were no patients enrolled in the trial who presented in cardiogenic shock and randomization was performed after the culprit lesion PCI procedure had been completed. At a median follow-up of 3 years, cardiovascular death or new MI (co-primary endpoint) was reduced by 26% (7.8 vs. 10.5%; hazard ratio 0.74;95% CI 0.60-0.91, p = .004) while cardiovascular death, new MI, or ischemia-driven revascularization (second co-primary endpoint) was reduced by 49% (8.9 vs. 16.7%; hazard ratio 0.51; 95% CI 0.43-0.61, p < .001) in the complete revascularization group. The benefit was observed regardless of the timing of the staged PCI and included both a reduction of 32% in the future risk for MI (5.4 vs. 7.9%; hazard ratio 0.68; 95% CI 0.53-0.86) and 82% for ischemia-driven revascularization (1.4 vs. 7.9%; hazard ratio 0.18; 95% CI 0.12-0.26) in the complete revascularization group.In November 2019 at the AHA 2019 Scientific Sessions, results from the multicenter, international ISCHEMIA trial were presented. 2 A total of 5,179 patients with stable coronary artery disease and moderate to severe ischemia were randomized to routine invasive therapy (revascularization with PCI or CABG in 80%) versus optimal medical therapy. Prior to randomization, 73% of the subjects underwent coronary tomographic (CT) angiography to exclude left main coronary artery disease. Subjects with an ejection fraction of <35%, class III/IV congestive heart failure or dialysis dependent renal failure were also excluded. No difference in the primary endpoint (cardiovascular death, MI, hospitalization for uns...