Bare-metal stent

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Bare-metal stent
Intervention
Stent1 fcm.jpg
A stent diagonally from the front
ICD-9-CM 00.63, 36.06, 39.90

Bare-metal stent is a vascular stent without a coating (as used in drug-eluting stents). It is a mesh-like tube of thin wire. The first stents licenced for use in cardiac arteries were bare metal - often 316L stainless steel. More recent ('2nd generation') stents use cobalt chromium alloy.

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.[1] However, once tissue re-growth covers the metal stent in the vessel, there is a lower rate of blood clot formation (thrombosis) of the stent.[2][3] As a result, patients with bare metal stents generally receive a shorter duration of blood-thinning anti-coagulation than do patients with drug-eluting stents, and bare-metals stents may be better for some patients for this reason.

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  1. ^ "Long-Term Outcomes Show Superiority of Second-Generation DES". 
  2. ^ PMID 20946992 (PubMed)
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  3. ^ PMID 20406239 (PubMed)
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