The 72-year-old patient is brought via the ambulance to the emergency department after his wife observed him collapsing after dinner. At the scene, emergency medical service (EMS) personnel determined he was in asystole, and began cardiopulmonary resuscitation (CPR). An advanced airway was placed and a peripheral intravenous catheter was inserted. The defibrillator was placed and read ventricular fibrillation; a shock was administered, chest compressions were restarted, and a 1 mg epinephrine dose was administered via peripheral IV. Upon arrival to the emergency department, the patient was found to be in pulseless electrical activity after 5 complete rounds of CPR (including epinephrine, defibrillation, and 30:2 chest compressions to ventilated breaths ratio). The nurse advocates for which intervention?