Prevention of restenosis by a novel drug-eluting stent system with a dose-adjustable, polymer-free, on-site stent coating.

Abstract:

AIMS:Drug-eluting stents (DES) represent a major advance in interventional cardiology. Along with the success shown, current DES also present limitations related to the presence of polymer-coating, fixed drug, and dose used. With the ISAR (Individualized Drug-Eluting Stent System to Abrogate Restenosis) project, a DES system has been developed that permits individualized choice of the drug and dose to use for the given patient. The objective of this prospective dose finding study was to assess the feasibility, safety, and efficacy of a polymer-free on-site stent coating with increasing rapamycin doses. METHODS AND RESULTS:In this dose finding study, 602 patients were sequentially enrolled in four groups: microporous bare metal stent (BMS), DES stents coated with a 0.5, 1.0, and 2.0% rapamycin solution. The angiographic in-segment restenosis rate at follow-up angiography was the primary study endpoint. In-segment restenosis was significantly reduced from 25.9% with BMS to 18.9, 17.2, and 14.7% with 0.5, 1.0, and 2.0% rapamycin-eluting stents, respectively (P=0.024). Similarly, the need for target lesion revascularization at 1 year follow-up was reduced from 21.5% with BMS to 16.4, 12.6, and 8.8% with 0.5, 1.0, and 2.0% rapamycin-eluting stents, respectively (P=0.006). CONCLUSION:The placement of polymer-free stents coated on-site with rapamycin is feasible and safe. Furthermore, a dose-dependent efficacy in restenosis prevention is achievable with this new DES concept.

journal_name

Eur Heart J

journal_title

European heart journal

authors

Hausleiter J,Kastrati A,Wessely R,Dibra A,Mehilli J,Schratzenstaller T,Graf I,Renke-Gluszko M,Behnisch B,Dirschinger J,Wintermantel E,Schömig A,investigators of the individualizable durg-eluting Stent System to Abrogate Restenosi

doi

10.1093/eurheartj/ehi405

subject

Has Abstract

pub_date

2005-08-01 00:00:00

pages

1475-81

issue

15

eissn

0195-668X

issn

1522-9645

pii

ehi405

journal_volume

26

pub_type

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