A 64-Year-Old Man with a History of Coronary Artery Disease

A 64-year-old man with a history of coronary artery disease and peripheral vascular disease undergoes coronary artery bypass surgery.  His postoperative course is complicated by hypotension, which is treated successfully with intravenous fluids; however, a few hours later, he experiences abdominal pain followed by bloody diarrhea.  His temperature is 37.8 C (100 F) , blood pressure is 110/60 mm Hg, pulse is 110/min, and respirations are 20/min.  Abdominal examination shows normal bowel sounds, with no significant guarding or focal tenderness.  Laboratory results are as follows: The venous lactic acid level is elevated.  An abdominal CT scan is ordered.  Which of the following areas will most likely show abnormal findings?

A) Ascending colon
B) Hepatic flexure
C) Jejunum
D) Mid transverse colon
E) Splenic flexure
F) Terminal ileum

Correct Answer:

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