 SPONSOR IRCCS Ospedale Maggiore Policlinico Milano INDICATION Acute myocardial infarction AMI. TARGET POPULATION Patients pts with AMI treated with Primary Coronary Angioplasty PTCA with successful recanalization but unsuccessful reperfusion myocardial blush MB grade 0 or 1 and less than 70 ST segment elevation resolution STeR see Poli et al., Circulation, 2002. 