CORAMI trial is a prospective, international, multicenter randomized study which will be performed in experienced invasive facility centres with 24/7 PCI (percutaneous coronary intervention) duty and patient enrollment will continue for 18 months (October 2010 - March 2012).The aim of the study is to compare strategy of complete vs target lesion-only primary PCI in IRA (infarct related artery) in STEMI (ST elevation myocardial infarction) patients.