Bare-metal stent

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Name = Bare-metal stent |

Image = Stent1 (fcm).jpg |

Caption = A bare-metal stent diagonally from the front |

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ICD9 = {{ICD9proc|00.63}}, {{ICD9proc|36.06}}, {{ICD9proc|39.90}} |

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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. The first stents licensed for use in cardiac arteries were bare metal – often 316L stainless steel. More recent "second generation" bare-metal stents have been made of cobalt chromium alloy.Nikam N et al. Advances in stent technologies and their effect on clinical efficacy and safety. Med Devices (Auckl). 2014 Jun 3;7:165-78. {{PMID|24940085}} {{PMC|4051714}} While plastic stents were first used to treat gastrointestinal conditions of the esophagus, gastroduodenum, biliary ducts, and colon, bare-metal stent advancements led to their use for these conditions starting in the 1990s.Park JS, Jeong S, Lee DH. Recent Advances in Gastrointestinal Stent Development. Clin Endosc. 2015 May; 48(3): 209–215. {{PMID|26064820}} {{PMC|4461664}}

Drug-eluting stents are often preferred over bare-metal stents because the latter carry a higher risk of restenosis, the growth of tissue into the stent resulting in vessel narrowing.Palmerini T et al. Long-Term Safety of Drug-Eluting and Bare-Metal Stents: Evidence From a Comprehensive Network Meta-Analysis. J Am Coll Cardiol. 2015 Jun 16;65(23):2496-507. {{PMID|26065988}}. [http://www.acc.org/latest-in-cardiology/articles/2015/06/24/11/58/long-term-outcomes-show-superiority-of-second-generation-des?w_nav=Tab Lay summary]