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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.
In some settings, an extraction catheter may be used to attempt to aspirate (remove) the thrombus prior to balloon angioplasty. While the use of intracoronary stents do not improve the short term outcomes in primary PCI, the use of stents is widespread because of the decreased rates of procedures to treat restenosis compared to balloon angioplasty.
Coronary stents are placed during a coronary angioplasty.The most common use for coronary stents is in the coronary arteries, into which a bare-metal stent, a drug-eluting stent, a bioabsorbable stent, a dual-therapy stent (combination of both drug and bioengineered stent), or occasionally a covered stent is inserted.
After placement of a stent or scaffold, the patient needs to take two antiplatelet medications (aspirin and one of a few other options) for several months to help prevent blood clots. The length of time a patient needs to be on dual antiplatelet therapy is individualized based risks of ischemic events and bleeding risk. [29]
March 2024) (Learn how and when to remove this message) Cypher is a brand of drug-eluting coronary stent from Cordis Corporation , a Cardinal Health company. During a balloon angioplasty , the stent is inserted into the artery to provide a "scaffold" to open the artery.
Like metal stents, placement of a bioresorbable stent will restore blood flow and support the vessel through the healing process. However, in the case of a bioresorbable stent, the stent will gradually resorb and be benignly cleared from the body, enabling a natural reconstruction of the arterial wall and restoration of vascular function. [6]
A stent may or may not ... angioplasty is a lower-risk option for the ... known as excimer laser coronary angioplasty, uses excimer lasers to remove small ...
[1] [2] As a result, dual therapy stents were developed to reduce the long-term need for dual-antiplatelet therapy. [3] The COMBO stent is the first and only dual therapy stent that addresses the challenges of vessel healing in drug-eluting stents. [4] This stent is an anti-CD34 antibody-coated and sirolimus-eluting bioresorbable stent. [2]