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Single-center experience with carotid stent restenosis
Andrea Willfort-Ehringer1, Ramazanali Ahmadi, Michael E Gschwandtner
1Department of Medical Angiology, General Hospital of Vienna, University of Vienna Medical School, Währinger Gürtel 18-20, A-1090 Vienna, Austria. andrea.wilfort@akh-wien.ac.at
Summary
Carotid stent restenosis is rare, typically occurring within a year. Percutaneous interventions offer safe treatment options for these recurrent internal carotid artery stenoses.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Neurology
Background:
- Carotid artery stenosis poses a significant risk for stroke.
- Stent placement is a common treatment for internal carotid artery stenosis.
- Restenosis after stenting can lead to recurrent symptoms and complications.
Purpose of the Study:
- To describe the angiographic features of carotid stent restenosis.
- To evaluate therapeutic outcomes for carotid stent restenosis.
- To report single-center experience with carotid stent restenosis management.
Main Methods:
- Retrospective analysis of 303 successful Wallstent placements in internal carotid arteries.
- Follow-up with duplex sonography and angiography for recurrent lesions (> or =70%).
- Treatment involved balloon dilation with or without additional stent placement.
Main Results:
- Nine cases (3.0%) of carotid stent restenosis occurred within 12 months.
- Two types identified: 'in-stent' (n=6) and 'end of stent' (n=3).
- Successful retreatment achieved with further stenting or balloon dilation; no early complications.
Conclusions:
- Carotid stent restenosis is an uncommon complication, rarely seen after one year.
- Further percutaneous interventions provide safe and effective treatment for carotid stent restenosis.
- Differentiation of restenosis types guides successful therapeutic strategies.