Review Question - QID 213685

A 67-year-old man with a history of diabetes mellitus, COPD, ST-elevation myocardial infarction, and ESRD currently on dialysis presents with shortness of breath for the past 2 hours. The patient missed his recent dialysis appointment and has been non-compliant with his other medications. The patient found out his best friend died this morning and has felt worse since this event. His temperature is 98.5°F (36.9°C), blood pressure is 87/48 mmHg, pulse is 130/min, respirations are 27/min, and oxygen saturation is 90% on room air. A bedside ultrasound demonstrates an anechoic rim surrounding the heart with poor cardiac squeeze, global hypokinesis, and right ventricular collapse with pleural sliding. Laboratory values are notable for 2 cardiac troponins that measure 0.72 ng/mL and 0.71 ng/mL (normal < 0.04 ng/ml). Which of the following is the most likely diagnosis?