RT Book, Section A1 Wang, John C. A1 Kashyap, Vikram S. A2 Dean, Steven M. A2 Satiani, Bhagwan A2 Abraham, William T. SR Print(0) ID 1105290995 T1 ACUTE MESENTERIC ISCHEMIA T2 Color Atlas and Synopsis of Vascular Diseases YR 2015 FD 2015 PB McGraw-Hill Medical PP New York, NY SN 9780071749541 LK accesssurgery.mhmedical.com/content.aspx?aid=1105290995 RD 2024/04/16 AB A 74-year-old hypertensive male presents with a four-hour history of acute-onset severe diffuse abdominal pain. Two weeks prior he was hospitalized with a large anterior wall MI complicated by intermittent atrial fibrillation. Due to a history of frequent falls, he was not anticoagulated. Physical examination is remarkable for an uncomfortable individual with an irregularly irregular heart rhythm and a minimally tender abdomen without peritoneal signs. Laboratory assessment is remarkable for a leukocytosis of 14,000 and mild metabolic acidosis. Electrocardiography indicates atrial fibrillation with a rapid ventricular response between 120 and 140 beats/minute. CT scan of the abdomen illustrates a distended small bowel and a questionable filling defect within the superior mesenteric artery (SMA). Mesenteric arteriography displays a "mercury meniscus sign" within the SMA 4 cm from the aorta. A diagnosis of cardioembolic acute mesenteric ischemia is made and the patient is immediately taken to the operating suite.