A 77-year-old man is brought to emergency by his wife 2 hours after the onset of severe diffuse abdominal pain. He has no past medical history. Temperature is 100 F. Physical examination shows mild tenderness to palpation of the abdomen. There is no involuntary guarding. Which of the following is the next best step in management?
CT of the abdomen
Echocardiography
Holter monitor
Mesenteric angiography
Serum troponins
