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Superior mesenteric artery compressing the duodenum, featuring the superior mesenteric artery syndrome. 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.
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 ]
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.
In limited studies following stenting, 97% of patients had improvement of symptoms by six months following the procedure, and long term follow-up showed no recurrence of symptoms after 66 months. Although less invasive, risks involved include incorrect placement of the stent as well as stent dislodging and migration to the right atrium.
Any blood flow-limiting blockage found in the X-ray can be identified and treated by procedures including atherectomy, angioplasty, or stenting. Contrast angiography is the most readily available and widely used imaging technique. [citation needed] Modern computerized tomography (CT) scanners provide direct imaging of the arterial system.
A snare catheter is inserted using the Seldinger technique under fluoroscopic guidance. The snare wire is advanced under direct visualization and flowered open. The object being retrieved is captured within the loops of snare, and retrieved with the snare wire and catheter, being carried out of the body at the tip of the catheter.
Angiography or arteriography is a medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins, and the heart chambers.
When a stent is used, the stent tube mesh is initially collapsed onto the balloon component of the catheter. In this collapsed state, it is small enough to be passed though relatively narrow peripheral arteries and then inflated by the underlying balloon and pressed firmly against the diseased coronary artery wall.