Brief summary

The goal of this multicenter randomized clinical trial is to test the superiority in terms of efficacy of the Angiography-derived fractional flow reserve (AIR) over that based on conventional angiography (ANGIO) strategy in the management of non-culprit lesions in STEMI patients with multivessel disease. The main questions it aims to answer are: * is an Angiography-derived fractional flow reserve strategy superior to a conventional angiography strategy in reducing the occurrence of the composite efficacy endpoint of all-cause death, myocardial infarction, cerebrovascular accident, or ischemia-driven revascularization. * is an Angiography-derived fractional flow reserve strategy superior to a conventional angiography strategy in reducing the occurrence of the composite safety endpoint of of contrast-associated acute kidney injury and Bleeding Academic Research Consortium (BARC) type 3-5. Participants will be randomized after the successful treatment of the culprit lesion to one of the two strategies and prospectively followed-up.