Platelet Indices and Intracoronary Thrombus Grade as Predictors of In-Hospital Major Cardiovascular Events in Patients with ST Elevation Myocardial Infarction Post Primary Percutaneous Coronary Intervention I Wayan Gunawan*, I Made Junior Rina Artha, I Kadek Susila Surya Darma Abstract Background: The high mortality rate of ST Elevation Myocardial Infarction (STEMI)