Review Question - QID 213476

A 67-year-old man with a history of diabetes mellitus, COPD, and a ST-elevation myocardial infarction currently on dialysis presents with shortness of breath for the past 2 hours. The patient missed his recent dialysis appointment and has been noncompliant with his other medications. The patient found out his best friend died this morning and has felt worse since this event. His temperature is 98.7°F (37.1°C), blood pressure is 87/48 mmHg, pulse is 130/min, respirations are 27/min, and oxygen saturation is 92% 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. Which of the following is the most likely diagnosis?