A 50 - year - old male patient is admitted to the ICU post - operatively after an intramedullary nailing (IM nailing) for a femur fracture. Upon arrival, he is alert, oriented and calm. Later during the shift, the ICU nurse notices that he is fidgety, restless, tachycardic, and short of breath. What does the ICU nurse anticipate the provider ordering?
a. Abdominal x - ray
b. Computed tomography (CT) scan with contrast
c. Troponin
d. Echocardiogram