A<unk>  <unk>  is a peripheral or coronary<unk>  (a scaffold) placed into narrowed, diseased peripheral or coronary arteries that slowly release a<unk>  to block cell proliferation. This prevents fibrosis that, together with clots (thrombi), could otherwise block the<unk> ed artery, a process called restenosis. The<unk>  is usually placed within the peripheral or coronary artery by an interventional cardiologist or interventional radiologist during an angioplasty procedure.<unk> s in current clinical use were approved by the FDA after clinical trials showed they were statistically superior to bare-metal<unk> s for the treatment of native coronary artery narrowings, having lower rates of major adverse cardiac events (usually defined as a composite clinical endpoint of death + myocardial infarction + repeat intervention because of restenosis). The first<unk> s to be approved in Europe and the U.S. were coated with paclitaxel or an mTOR inhibitor, such as sirolimus.
Drug-eluting stent
Cypher stent
Dual therapy stent
Coronary stent
Hybrid coronary revascularization
Bare-metal stent
Transmyocardial revascularization
Valvulotomy