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Chimney: In TEVAR, a covered stent placed from the ascending aorta to a great vessel (e.g., innominate artery) and adjacent to the main body of the EVAR is termed a chimney. In anatomic position, blood flows superiorly through a chimney-stent graft into the great vessel, just as smoke flows up a chimney.
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 ]
The covered stent is composed of metal and is covered with Teflon (PTFE) or another sterile fabric-like material. The covered stent remains in place permanently, and the pseudoaneurysm, without a continuous flow of arterial blood, then thromboses. Advantages of this technique are that it has a high success rate without the need for an open surgery.
Endoscopic stenting is a medical procedure by which a stent, a hollow device designed to prevent constriction or collapse of a tubular organ, is inserted by endoscopy. They are usually inserted when a disease process has led to narrowing or obstruction of the organ in question, such as the esophagus or the colon .
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.
Chronic mesenteric ischemia requires surgical revascularization and treatment like stents, transaortic endarterectomy, or bypassing the arteries. Abdominal angina often has a one-year delay between symptoms and treatment, leading to complications like malnutrition or bowel infarction. Abdominal angina is more prevalent in females with a 3:1 ...
Removal of coronary artery obstruction and insertion of stent(s) ( 36.1 ) Bypass anastomosis for heart revascularization ( 36.2 ) Heart revascularization by arterial implant
Complicated Stanford type B aortic dissections require surgical intervention after initiation of medical therapy, with endovascular stent-grafting (TEVAR) available as a less invasive alternative to surgery. [42] The risk of death due to aortic dissection is highest in the first few hours after the dissection begins, and decreases afterward. [42]