Effect of High Loading Dose of Atorvastatin in ST Elevation Myocardial Infarction Patients Undergoing Primary Percutaneous Coronary Intervention on Microvascular Perfusion Measured by Index of Microvascular Resistance

INTERVENTION: High loading dose of atorvastatin (80 mg) before primary PCI. Atorvastatin was given in oral tablet formulation immediately after patients was diagnosed as STEMI in emergency department and planned to do primary PCI CONDITION: Myocardial Obstruction after Primary PCI ST Elevation Myocardial Infarction PRIMARY OUTCOME: Myocardial perfusion measured by index of microcirculatory resistance. Index of microcirculatory resistance measured using a pressure‐temperature sensor‐tipped wire. It needs maximal hyperemic state that induced by adenosine infusion 140 ug/kg/minutes SECONDARY OUTCOME: 'None' INCLUSION CRITERIA: ST elevation minimal 0.1 mV in 2 concomittant ECG lead or new or presumably new LBBB