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Symptoms include abdominal pain, weight loss, diarrhea, nausea, vomiting, and an aversion or fear of eating caused by the pain associated with eating. Abdominal angina is caused by obstruction or stenosis of the inferior mesenteric artery, celiac trunk, or superior mesenteric artery.
There are four mechanisms by which poor blood flow occurs: a blood clot from elsewhere getting lodged in an artery, a new blood clot forming in an artery, a blood clot forming in the superior mesenteric vein, and insufficient blood flow due to low blood pressure or spasms of arteries. [3] [6] Chronic disease is a risk factor for acute disease. [7]
In addition, ischemic colitis is a well-recognized complication of abdominal aortic aneurysm repair, when the origin of the inferior mesenteric artery is covered by the aortic graft. [13] [14] In a 1991 review concerning 2137 patients the accidental inferior mesenteric artery ligation was the most common cause (74%) of ischemic colitis. [15]
Types of mesenteric ischemia are generally separated into acute and chronic processes, because this helps determine treatment and prognosis. [3] Bowel obstruction is most often caused by intestinal adhesions, which frequently form after abdominal surgeries, or by chronic infections such as diverticulitis, hepatitis, and inflammatory bowel disease.
Superior mesenteric artery (SMA) syndrome is a gastro-vascular disorder in which the third and final portion of the duodenum is compressed between the abdominal aorta (AA) and the overlying superior mesenteric artery. This rare, potentially life-threatening syndrome is typically caused by an angle of 6–25° between the AA and the SMA, in ...
Isolated superior mesenteric artery dissection (ISMAD) is a rare but potentially life-threatening condition that causes acute abdominal pain. It refers to a dissection that occurs solely in the superior mesenteric artery (SMA), typically spontaneously, and does not involve the aorta . [ 1 ]
Vascular: embolism, thrombosis, hemorrhage, sickle cell disease, abdominal angina, blood vessel compression (such as celiac artery compression syndrome), superior mesenteric artery syndrome, postural orthostatic tachycardia syndrome; Digestive: peptic ulcer, lactose intolerance, celiac disease, food allergies, indigestion; Glands Bile system
The right becomes the superior mesenteric artery that supplies a terminal branch to the diverticulum, while the left involutes. [17] Having its own blood supply, Meckel's diverticulum is susceptible to obstruction or infection. Meckel's diverticulum is located in the distal ileum, usually within 60–100 cm (2 feet) of the ileocecal valve.