Therapeutic implications of in-stent restenosis located at the stent edge. Insights from the restenosis intra-stent balloon angioplasty versus elective stenting (RIBS) randomized trial
View abstract on PubMed
Summary
This summary is machine-generated.In-stent restenosis (ISR) affecting the stent edge (EDG) is a distinct subgroup. Repeat stent implantation in EDG ISR patients significantly improves clinical and angiographic outcomes compared to balloon angioplasty.
Area Of Science
- Cardiovascular Medicine
- Interventional Cardiology
- Medical Device Technology
Background
- In-stent restenosis (ISR) is a complication of percutaneous coronary intervention.
- ISR affecting the stent edge (EDG ISR) is a poorly characterized subgroup with unclear therapeutic implications.
- Understanding EDG ISR is crucial for optimizing treatment strategies.
Purpose Of The Study
- To investigate the clinical and angiographic implications of EDG ISR.
- To compare the outcomes of repeat stent implantation versus balloon angioplasty in patients with EDG ISR.
Main Methods
- Analysis of 450 patients from the RIBS randomized study.
- Predefined identification and core-lab analysis of EDG ISR patterns.
- Comparison of outcomes between EDG ISR and non-EDG ISR groups, and between stent and balloon treatment arms for EDG ISR.
Main Results
- EDG ISR occurred in 12% of patients, with less severe and shorter lesions.
- Patients with EDG ISR treated with repeat stenting showed improved immediate and long-term angiographic results (MLD, recurrent restenosis).
- Repeat stenting in EDG ISR was associated with significantly better 1-year event-free survival and was an independent predictor of freedom from target vessel revascularization.
Conclusions
- EDG ISR represents a specific subgroup of in-stent restenosis with significant therapeutic implications.
- Repeat stent implantation in patients with EDG ISR offers superior clinical and angiographic outcomes compared to conventional balloon angioplasty.