Review Question - QID 216315

A 58-year-old woman presents to the emergency room after a syncopal event complaining of weakness and dizziness. Over the past 2 weeks, she has had subjective fevers, chills, fatigue, and more recently began experiencing discomfort in her chest. Her past medical history is notable for hypertension that is well-controlled on lisinopril. Her temperature is 37.2°C (98.9°F), blood pressure is 83/58 mmHg, pulse is 150/min, respirations are 18/min, and oxygen saturation is 97% on room air. On exam, she has jugular venous distension and her lungs are clear to auscultation bilaterally. An ECG is performed, which is shown in Figure A. Which of the following is the most appropriate next step in management?