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  • Title: The paclitaxel-eluting stent in percutaneous coronary intervention: Part II. Comparison with the sirolimus-eluting stent, economics, and unanswered questions.
    Author: Ray GM, Nawarskas JJ, Frishman WH.
    Journal: Cardiol Rev; 2006; 14(3):143-50. PubMed ID: 16628023.
    Abstract:
    The paclitaxel- and sirolimus-eluting stents are currently the only drug-eluting stents approved for use in the United States. These 2 stents differ in terms of mechanism of drug action, the construct of the stent itself, and the drug delivery polymer. Clinical trials have demonstrated superiority of both paclitaxel- and sirolimus-eluting stents when compared with bare-metal stents in terms of reducing restenosis and the need for target vessel revascularization. Recently published head-to-head trials have not conclusively shown 1 drug-eluting stent to be superior to the other, but have demonstrated more favorable angiographic results with the sirolimus-eluting stent compared with the paclitaxel-eluting stent; however, no significant difference has been demonstrated in clinical outcomes such as myocardial infarction or death. In terms of economics, the paclitaxel-eluting stent is substantially more expensive than the bare-metal stent. However, by significantly reducing the risk of restenosis and need for repeat revascularization, the higher direct cost of the paclitaxel-eluting stent may in theory be offset by lower overall healthcare costs, although economic analyses have yet to definitively establish that the paclitaxel-eluting stent is truly cost-effective. There is still much to be discovered regarding the paclitaxel-eluting stent, specifically the optimal stent design and drug release mechanism, the relative safety and efficacy of the paclitaxel-eluting stent compared with other drug-eluting stents, the long-term effects of the paclitaxel-eluting stent, the ideal antiplatelet regimen to use in patients with a paclitaxel-eluting stent, the safety and efficacy of the paclitaxel-eluting stent in various high-risk patient groups, and the ultimate cost-effectiveness of this device.
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