IVUS Versus FFR for Non-infarct Related Artery Lesions in Patients With Multivessel Disease and Acute MI

In IVUS-guided PCI group, the current trial evaluates clinical outcome following IVUS-guided treatment decision for revascularization of non-IRA stenosis.

In FFR-guided PCI group, FFR measurement for non-IRA stenosis (\>50% visual estimation) will be performed by continuous infusion of adenosine (140\~180 ug/kg/min) or intracoronary nicorandil (2 mg bolus) injection. The FFR ≤0.80 will be targeted for PCI. In case of non-IRA stenosis \>90%, we will judge FFR value of ≤0.80.