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Stentrode (Stent-electrode recording array) is a small stent-mounted electrode array permanently implanted into a blood vessel in the brain, without the need for open brain surgery. It is in clinical trials as a brain–computer interface (BCI) for people with paralyzed or missing limbs, [ 1 ] who will use their neural signals or thoughts to ...
Stent grafts, or endo-grafts, are a more permanent solution in the hemodynamically unstable patient and are an important part of the tool kit for EVTM. They are self-expanding artificial reconstructions of vessels with fabric coating deployed inside the original vessel and help to gain temporary control, stop the hemorrhage and repair the ...
The major benefit of drug-eluting stents (DES) when compared to bare-metal stents (BMS) is the prevention of in-stent restenosis (ISR). [70] Restenosis is a gradual re-narrowing of the stented segment that occurs most commonly between 3–12 months after stent placement. [ 119 ]
The vast majority of stents used in modern interventional cardiology are drug-eluting stents (DES). They are used in a medical procedure called percutaneous coronary intervention (PCI). Coronary stents are divided into two broad types: drug-eluting and bare metal stents. As of 2023, drug-eluting stents were used in more than 90% of all PCI ...
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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.
This leads to varices in the esophagus and stomach, which can bleed; B) a needle has been introduced (via the jugular vein) and is passing from the hepatic vein into the portal vein; c) the tract is dilated with a balloon; D) after placement of a stent, portal pressure is normalized and the coronary and umbilical veins no longer fill.
Intravenous digital subtraction angiography (IV-DSA) is a form of angiography which was first developed in the late 1970s.. IV-DSA is a computer technique that compares an X-ray image of a region of the body before and after radiopaque iodine based dye has been injected intravenously into the body.