Bare-metal stents are small, mesh-like tubes made of metal that are used to treat narrowed or blocked arteries, particularly in the heart. They are inserted during a procedure called angioplasty, where a balloon is inflated to open the artery, and the stent is placed to keep it open. Unlike drug-eluting stents, bare-metal stents do not release medication to prevent re-narrowing. These stents provide immediate support to the artery walls, helping to restore blood flow. However, they may have a higher risk of restenosis, which is the re-narrowing of the artery, compared to stents that release medication. Regular follow-up care is essential after stent placement.