Snapshot A 69-year-old female presents to the emergency room for bright red blood per rectum for the past 2 hours. She noticed some blood in her stool shortly after experiencing some abdominal pain. The pain is reported as dull, achy, 5/10, and concentrated at the left lower quadrant. Her past medical history is significant for hypertension and a past myocardial infarction (MI). Introduction Clinical definition login to view 1 more bullet Epidemiology Demographics login to view 2 more bullets Risk factors login to view 4 more bullets ETIOLOGY Pathogenesis login to view 10 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 3 more bullets imaging Abdominal radiograph login to view 2 more bullets Computed tomography (CT) angiography without oral contrast login to view 2 more bullets Endoscopic evaluation login to view 3 more bullets Studies Diagnostic testing login to view 7 more bullets Differential Mesenteric ischemia login to view 2 more bullets Colonic malignancy login to view 2 more bullets Treatment Management approach login to view 1 more bullet Mild colonic ischemia login to view 5 more bullets Moderate colonic ischemia login to view 3 more bullets Severe colonic ischemia login to view 4 more bullets Complications Bowel necrosis Perforation Sepsis Death Stricture/obstruction