Review Question - QID 217096

A 36-year-old woman with a history of pulmonary sarcoidosis presents to her primary care physician with fatigue and shortness of breath. She states her symptoms have been progressively worsening over the past 2 months. Additionally, she reports that her shoes seem to no longer fit and that she is unable to lay down flat for long periods of time. Her temperature is 98.6°F (37.0°C), blood pressure is 135/85 mmHg, pulse is 95/min, and respirations are 16/min. On exam, her jugular veins become distended during inspiration and breath sounds are decreased at the lung bases bilaterally. Electrocardiogram (ECG) demonstrates low QRS voltages. Echocardiogram demonstrates an ejection fraction of 45% with left ventricular wall thickening. A troponin is ordered and is pending. Which of the following is the most likely diagnosis?