A 62-year-old man presents 90 minutes after the onset of central crushing chest pain radiating to his left arm. He is sweaty and nauseated. ECG shows 3 mm ST elevation in leads V2–V5. Paramedics have already given 300 mg Aspirin and a P2Y12 inhibitor. A 24-hour primary percutaneous coronary intervention (PCI) service is available and can treat him within 90 minutes of arrival. What is the single most appropriate next step in his management?