A 55-year-old patient presents to the emergency department with severe chest pain, dyspnea, hypotension, and a rapid, thready pulse. The patient's medical history includes myocardial infarction one year ago. The ECG shows ST-segment elevation, and the chest X-ray does not indicate pneumothorax or hemothorax. Which intervention is MOST appropriate for managing this patient's condition?
Administration of vasopressors without addressing revascularization
Immediate revascularization
High-concentration oxygen therapy alone
Aggressive volume expansion with intravenous fluids