Related Experiment Video
Updated: May 21, 2026
A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
[Efficiency of endovascular re-interventions for evolving restenosis of different types of stents]
Insights
For non-drug-eluting stents, repeat procedures are less common after repeat stenting than balloon angioplasty. For drug-eluting stents, outcomes are similar between repeat stenting and balloon angioplasty.
Area of Science:
- Cardiology
- Interventional Cardiology
- Biomedical Engineering
Background:
- In-stent restenosis (ISR) remains a significant challenge after coronary stent implantation.
- Both drug-eluting stents (DES) and non-drug-eluting stents (non-DES) can develop ISR, necessitating further intervention.
- Comparing treatment strategies for ISR in different stent types is crucial for optimizing patient outcomes.
Purpose of the Study:
- To compare the efficacy of balloon angioplasty versus repeat stenting for ISR in patients with prior non-DES and DES.
- To evaluate recurrent angina and restenosis rates following different treatment modalities for ISR.
Main Methods:
- Retrospective analysis of 496 coronary heart disease patients with ISR.
- Patients were categorized based on prior stent type: non-DES (n=280) and DES (n=216).
- Treatment options analyzed included balloon angioplasty and repeat stenting (with DES).
Main Results:
- In non-DES ISR, balloon angioplasty led to significantly higher rates of recurrent angina (28.4% vs. 10.2%) and restenosis (19.9% vs. 8.7%) compared to repeat stenting (p < 0.05).
- In DES ISR, no significant difference in recurrent angina or restenosis rates was observed between balloon angioplasty and repeat stenting.
- These findings suggest differential responses to treatment based on stent type.
Conclusions:
- Repeat stenting appears more effective than balloon angioplasty for managing ISR in non-DES, reducing angina and restenosis.
- For DES ISR, balloon angioplasty and repeat stenting demonstrate comparable clinical outcomes.
- Treatment choice for ISR should consider the type of previously implanted stent.
Abstract:
The paper compares the results of different treatment options (balloon angioplasty and restenting) for in-stent restenosis in case of evolving restenosis of drug- and nondrug eluting stents. The investigation enrolled 496 coronary heart disease patients with clinical presentation of angina pectoris and/or signs of myocardial ischemia, as well as hemodynamic restenosis of a previously implanted stent. Of them, 216 and 280 patients had restenosis of previously implanted drug- and nondrug-eluting stents, respectively. In the patients with non-drug-eluting stent restenosis, recurrent angina pectoris and the frequency of repeated restenosis were significantly more frequently observed after balloon dilatation than after drug-eluting stent implantation (28.4 and 10.2%; p < 0.05; 19.9 and 8.7%; p < 0.05). In those with drug-eluting stent restenosis, recurrent angina pectoris and the frequency of repeated restenosis did not differ significantly between balloon dilatation of restenosis and implantation of a second drug-eluting stent.
