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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 ...
In addition, stenosis of the inferior mesenteric artery was very severe. Abdominal angina is caused by obstruction or stenosis of the inferior mesenteric artery (IMA), celiac trunk, or superior mesenteric artery (SMA). [4] More than 95% of abdominal angina is caused by stenosis of the splanchnic arteries due to local atherosclerosis.
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 ]
This leads to narrowing, or in the most severe cases, complete obliteration of the intestinal lumen. [citation needed] In the case that the superior mesenteric artery, or another major intestinal artery, is occluded, large segments of bowel can be entirely underdeveloped (Type III). Classically, the affected area of bowel assumes a spiral ...
In human anatomy, the superior mesenteric artery (SMA) is an artery which arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies blood to the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
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]
This can result in pelvic pain and also GI tract irritation leading to bloating, abdominal fullness, constipation and/or diarrhea. Often times nutcracker syndrome occurs alongside other abdominal compressions such as May Thurner Syndrome, Superior Mesenteric Artery Syndrome, and Median Arcuate Ligament Syndrome.
The superior mesenteric vessels are composed of the superior mesenteric artery and the superior mesenteric vein.. In human anatomy, the superior mesenteric artery arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
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