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Updated: Jun 2, 2026

A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Drug eluting stent and coronary chronic total occlusions
G Niccoli1, A Leo, S Giubilato
1Institute of Cardiology, Sacro Cuore Catholic University, Rome, Italy. gniccoli73@hotmail.it
Insights
Drug-eluting stents (DES) improve outcomes for chronic total occlusion (CTO) interventions by reducing restenosis. However, long-term challenges with DES in CTO treatment require further investigation.
Area of Science:
- Interventional Cardiology
- Cardiovascular Research
- Medical Device Technology
Background:
- Chronic total occlusion (CTO) is a frequent and complex finding in coronary angiography.
- CTO interventions pose significant challenges for interventional cardiologists.
- Advancements in guidewires and techniques have improved CTO crossing success rates.
Purpose of the Study:
- To review the current knowledge on stent application in CTO treatment.
- To specifically focus on the use of drug-eluting stents (DES) in CTO.
- To highlight emerging challenges and long-term outcomes associated with DES in CTO.
Main Methods:
- Review of current literature on CTO recanalization and stenting.
- Analysis of the impact of bare metal stents and DES on CTO outcomes.
- Examination of short- and mid-term follow-up data post-CTO recanalization.
Main Results:
- Drug-eluting stents (DES) have significantly reduced restenosis and target lesion revascularization compared to bare metal stents.
- Improved success rates in crossing CTO lesions have been achieved with new technologies.
- Unresolved issues concerning the long-term efficacy and safety of DES in CTO are emerging.
Conclusions:
- DES have enhanced short- and mid-term outcomes in CTO interventions.
- Further research is needed to address the long-term implications of DES use in CTO.
- Optimizing DES strategies for CTO is crucial for improving patient outcomes.
Abstract:
Chronic total occlusion (CTO) is a common finding on diagnostic coronary angiography and represents one of the most challenging lesion subset in interventional cardiology. The introduction of dedicated guidewires and the development of new techniques have led to improve the success rate in the crossing of CTO lesion while the use of bare metal stent first, and, then, the use of drug eluting stent (DES) have significantly reduced the occurrence of restenosis and the need for target lesion revascularization in short and mid-term follow-up after CTO recanalization. However, new unsolved issues about the use of DES in CTO, that might impact long-term outcome, are emerging. The aim of this article is to review the current stage of knowledge on the application of stents in the treatment of CTO, with a particular attention to DES use and to DES-related challenges.
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