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A Journal on Heart and Vascular Diseases

Official Journal of the Italian Society of Angiology and Vascular Pathology
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Minerva Cardioangiologica 2005 February;53(1):43-8

language: English

Coronary restenosis after implantation of drug-eluting stents''

Schofer J., Schlüter M.


Randomized trials comparing drug-eluting stents (DES) with bare-metal stents have shown that the former significantly reduce the incidence of angiographic and clinical restenosis into an unprecedented low, one-digit, range. However, post-DES restenosis is not zero. Next to incomplete coverage with DES of the vessel segment injured by balloon angioplasty, factors such as stent underexpansion, stent overexpansion, and nonuniform distribution of stent struts have been associated with post-DES restenosis. Current evidence suggests that inadequate, though predominantly focal, delivery of the antiproliferative agent (sirolimus or paclitaxel) into the vessel wall is likely the common cause of post-DES restenosis. There is no consensus at present on how to treat post-DES restenosis. Long-term results reported to date on small numbers of patients undergoing interventional treatment for post-DES restenosis appear to be worse than outcomes observed after the index intervention, regardless of whether another DES was implanted or not, and warrant further study.

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