• Older man with atrial fibrillation who is not on prophylactic anticoagulation who presents with non-specific lethargy, hypotension, abdominal tenderness with guarding, increased WBC count and surgical findings of dark necrotic bowel, most consistent with an arterial embolus (most likely from the left atrial appendage in setting of atrial fibrillation)
• Adhesions would lead to small bowel obstruction (pain, distention, obstipation), and C. difficile would lead to pseudomembrane image on NBME

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