OBJECTIVE	The study sought to determine whether rapid access to medical care and reperfusion results in a better prognosis in patients with in-hospital compared with out-of-hospital stent thrombosis ( ST ) in patients with ST-segment elevation myocardial infarction ( STEMI ) in the HORIZONS-AMI ( Harmonizing Outcomes with Revascularization and Stents in Acute Myocardial Infarction ) trial .\