MEDRADSC 3C03 Lecture Notes - Lecture 24: Transjugular Intrahepatic Portosystemic Shunt, Aortic Dissection, Photoplethysmogram

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Metal scaffolds/mesh used to support a vessel wall - blood can still pass through. Stents covered with graft material - something to prevent blood from passing through the mesh. To treat aneurysms & arterial rupture - wanting to seal off the rupture. Usually made of stainless steel, strongest type - quick rigid (good for straight vessels, bad for tortuous or if in an area of a lot of flexion/compression) Mounted on the outer surface of a balloon. Used for shorter or more uniform diameter vessels - due to how rigid they are. Stent should not be longer than the working surface of a balloon - balloon needs to be longer to completely expand entire length of stent. Deployed from ends first, makes its way back towards the middle. Have a memory - exist over a catheter, compressed by a sheath - not being blown up.

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