View source for Bare-metal stent

{{Infobox interventions |
  Name        = Bare-metal stent |
  Image       = Stent1 (fcm).jpg |
  Caption     = A bare-metal stent diagonally from the front |
  ICD10       = |
  ICD9        = {{ICD9proc|00.63}}, {{ICD9proc|36.06}}, {{ICD9proc|39.90}} |
  MeshID      = |
  OPS301      = |
  OtherCodes  = |
  HCPCSlevel2 =
}}
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.<ref name=Nikam2014rev>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}}</ref>  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.<ref name=ParkGI2015rev>Park JS, Jeong S, Lee DH.  Recent Advances in Gastrointestinal Stent Development.  Clin Endosc. 2015 May; 48(3): 209–215. {{PMID|26064820}} {{PMC|4461664}}</ref>

[[Drug-eluting stent]]s 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.<ref>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]</ref>

== Examples ==
* Stainless steel: R stent ([[OrbusNeich]]), [[Genous Bio-engineered Stent|Genous Bio-engineered R stent]] ([[OrbusNeich]]), (J&J, Cordis) BxVelocity, (Medtronic) Express2, Matrix Stent (Sahajanand Medical technologies)
* Cobalt-chromium alloy: Vision ([[Abbott Laboratories|Abbott Vascular]]); MP35N Driver stent ([[Medtronic]])<ref name=PlatChrom2015rev>Jorge C, Dubois C  Clinical utility of platinum chromium bare-metal stents in coronary heart disease. Med Devices (Auckl). 2015 Aug 27;8:359-67. {{PMID|26345228}} {{PMC|4556305}}</ref>
* Platinum chromium alloy: Omega BMS ([[Boston Scientific]])<ref name=PlatChrom2015rev/>

== See also ==
* {{anl|coronary stent}}
* {{anl|percutaneous coronary intervention}}
* {{anl|bioresorbable stent}}
* {{anl|drug-eluting stent}}
* {{anl|angioplasty}}

== References ==
{{reflist}}


{{Cardiac procedures}}
{{Vascular procedures}}

[[Category:Implants (medicine)]]
[[Category:Interventional cardiology]]


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