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A bare-metal stent is a stent made of thin, uncoated (bare) metal wire that has been formed into a mesh-like tube. In medical care, physicians place stents into narrowed blood vessels to expand the vessels, allowing for improved blood flow and oxygen delivery. While stents have most commonly been deployed in the coronary arteries in the heart, additional applications include the carotid, peripheral, and neural arteries. Overall, doctors can widen narrowed arteries by either placing expandable stents within the artery or surgically replacing the artery with synthetic blood vessels known as grafts. Stents may be favored over bypass surgery due to lower short term morbidity associated with the procedure. Stents are deployed through catheters, which are small, flexible metal tubes doctors thread through blood vessels to reach the target artery.
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