The nurse is reviewing the client's medical record. A nurse is reviewing the client's diagnostic results and vital signs. Which of the following actions should the nurse take? Select all that apply.

A. The client is presenting with classic signs of acute coronary syndrome, including chest pain radiating to the left arm, diaphoresis, ECG changes (ST-segment elevation), and elevated troponins. Cardiac catheterization is often indicated to evaluate coronary artery blockages and provide reperfusion therapy if needed. Preparing the client for the procedure includes NPO status, explaining the procedure, ensuring IV access, and reviewing allergies and prior contrast reactions. B. Anticoagulation is standard in ACS management to prevent further thrombus formation in the coronary arteries. The nurse may assist with initiating and monitoring a heparin infusion, ensuring proper dosage and monitoring for bleeding complications. C. Ambulation increases myocardial oxygen demand and can worsen ischemia or precipitate complications in the setting of ACS or STEMI. The client should remain on bed rest or limited activity until stabilized and cleared by the provider. D. The client is on a scheduled titration of metoprolol. Dosage changes are determined by the provider based on blood pressure, heart rate, and response to therapy. This is not an immediate nursing action in acute ACS. E. Clients undergoing cardiac catheterization must be NPO to reduce the risk of aspiration during sedation or contrast administration. The nurse should verify and document NPO status while ensuring ongoing comfort and hydration via IV fluids. F. There is no evidence of infection in this scenario. Antibiotics are not indicated for ACS unless there is a concurrent infectious process, which is not present.