Question category: Gastroenterology
A 70 year old male who has a past medical history of atrial fibrillation and peripheral vascular disease presents with abdominal pain which is crampy in nature. On examination he looks unwell and clammy. He was hypotensive and tachycardic. His abdomen was minimally tender and there was no evidence of peritonism. His inflammatory markers are increased as is amylase. His lactate is elevated at 5. He has been having pain intermittently after eating for some time. What is the most likely diagnosis?