Based on the assessment findings and what is the priority action for this patient?

You are working as a nurse in the emergency department. A patient arrives with complaints of severe chest pain radiating to the left arm. The patient appears diaphoretic and is short of breath. The patient’s vital signs are as follows : Blood Pressure 90/60 Mmhg, heart rate 120 bpm, respiratory rate 24 breaths per minute and oxygen saturation 92% on Room Air.