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Coronary artery stents, typically a metal framework, can be placed inside the artery to help keep it open. However, as the stent is a foreign object (not native to the body), it incites an immune response. This may cause scar tissue (cell proliferation) to rapidly grow over the stent and cause a neointimal hyperplasia.
The stents help to open up the narrowed artery and improve blood flow. However, over time, the treated artery can close up again, a condition known as restenosis. [20] Restenosis, or in-stent restenosis, is a blockage or narrowing that comes back in the portion of the artery previously treated with a stent. [20]
[3] [4] [5] Vascular stents are commonly used in angioplasty, a surgical procedure that opens blocked arteries and places a stent to keep the artery open. This is a common treatment for heart attacks and is also used in the prevention and treatment of strokes. Over 2 million people receive a stent each year for coronary artery disease alone.
Percutaneous coronary angioplasty is one of the most common procedures performed during U.S. hospital stays; it accounted for 3.6% of all operating room procedures performed in 2011. [38] Between 2001 and 2011, however, its volume decreased by 28%, from 773,900 operating procedures performed in 2001 to 560,500 procedures in 2011.
Stent procedure. Coronary artery bypass surgery. Heart transplant. ... Dilated cardiomyopathy is one of the main causes of heart failure. It occurs in about 1 in 2,500 people. Treatment for ...
Peripheral artery disease is a narrowing of one of the arteries that carries blood to your limbs. ... Percutaneous coronary intervention (coronary angioplasty with stent placement): A percutaneous ...
A dual therapy stent is a coronary artery stent that combines the technology of an antibody-coated stent and a drug-eluting stent. [1] Currently, second-generation drug-eluting stents require long-term use of dual-antiplatelet therapy , which increases the risk of major bleeding occurrences in patients. [ 2 ]
A bioresorbable stent is a tube-like device that is used to open and widen clogged heart arteries and then dissolves or is absorbed by the body. It is made from a material that can release a drug to prevent scar tissue growth. It can also restore normal vessel function and avoid long-term complications of metal stents. [1] [2]
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