The Use Of FFR Guided PCI Versus Complete Revascularization and Treatment Of Infarct Related Artery Only In Patients With STEMI

To compare the clinical outcomes measured by composite of mortality, myocardial infarction and repeat revascularization by using FFR guided and angiographically guided revascularization to the standard strategy of ischaemia driven revascularization. Participants will be allocated to three arms, first conservative group of ischaemia guided PCI, second FFR guided PCI and third angiogram guided PCI where patients where patients with more than 50% lesion will undergo revascularization.