Physiology-guided vs Angiography-guided Non-culprit Lesion Complete Revascularization for Acute MI & Multivessel Disease

Open to people ages 18 years and up

1. Patients presenting with STEMI or type 1 NSTEMI and within 72 hours of successful culprit-lesion PCI
2. Residual coronary artery disease defined as at least 1 additional non-infarct-related coronary artery stenosis that meets all of the following criteria:
   1. Amenable to successful treatment with PCI
   2. At least 50% diameter stenosis by visual estimation
   3. At least 2.5 mm in diameter
3. Planned complete revascularization strategy for qualifying MI

1. Planned or prior coronary artery bypass graft (CABG) surgery
2. Inability to clearly identify a culprit lesion for STEMI or NSTEMI based on angiographic appearance and/or ECG changes and/or regional wall motion abnormalities
3. Prior PCI of a non-culprit lesion in a different vessel from the culprit lesion within 45 days of randomization
4. Planned medical treatment of all qualifying non-culprit lesions (i.e., no PCI)
5. Presence of severe non-culprit-lesion stenosis with reduced epicardial flow (TIMI flow ≤ 2) or >90% visual diameter stenosis
6. Presence of a chronic total occlusion (CTO) if it is the only qualifying non-culprit lesion (patients with a CTO plus additional qualifying non-culprit lesions are eligible)
7. The only qualifying non-culprit lesion is in the same vessel territory as the culprit lesion
8. Baseline STEMI or NSTEMI was due to a suspected non-atherothrombotic mechanism such as type 2 MI (supply-demand mismatch), including spontaneous coronary artery dissection or coronary artery embolism
9. Non-cardiovascular co-morbidity with expected life expectancy <2 years
10. Any other medical, geographic, or social factor making study participation impractical or precluding 5 year follow-up