A 71-year-old male presents to the GP for a two-day history of bright red blood in his stool. There is no pain. He has a 28-year-history of type II diabetes mellitus and long-standing hypertension managed with lisinopril. He experiences occasional pressure and discomfort in his upper legs that is relieved with rest. He had coronary artery bypass grafting performed 5 years ago. Vitals are: temperature 98.6 F, HR 72, RR 16, BP 150/90. Hemoglobin is 14 g/dL. HbA1c is 10.5%. A colonoscopy one year ago showed no abnormalities. Auscultation of the chest reveals no murmurs. Which of the following is the most likely explanation for these findings?
Acute mesenteric ischemia
Angiodysplasia
Chronic mesenteric ischemia
Colonic adenocarcinoma
Ischemic colitis
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Cut-to-the-chase Answer (0:25):
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HY USMLE Answer (7:56):
