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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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WHAT’S NEW IN CAROTID ARTERY STENTING VASCULAR SECTION
The Journal of Cardiovascular Surgery 2005 June;46(3):241-7
Does carotid artery stenting work on the long run: 5-year results in high-volume centers (ELOCAS Registry)
Bosiers M. 1, Peeters P. 2, Deloose K. 1, Verbist J. 2, Sievert H. 3, Sugita J. 3, Castriota F. 4, Cremonesi A. 4
1 Department of Vascular Surgery AZ St-Blasius, Dendermonde, Belgium
2 Department of Cardiovascular and Thoracic Surgery Imelda Hospital, Bonheiden, Belgium
3 Cardiovascular Center Frankfurt, Frankfurt, Germany
4 Department of Cardiology Villa Maria Cecelia Hospital, Ravenna, Italy
Aim. Although the first long-term results of Carotid Artery Stenting (CAS) became available only recently, CAS has become an accepted treatment for carotid artery disease. We report CAS data up to 5 years, both late stroke rate and patency rates as observed in 4 high-volume European centers.
Methods. Between February 1, 1993 and December 31, 2004, 2 172 patients were selected over the 4 participating centres, with intention to treat endovascularly. Conscientious follow-up was done according to the in-hospital stipulations of each centre and was entered into a database both retrospectively and prospectively. Long-term restenosis and stroke-death rates were investigated and statistically analysed and stratified using the Kaplan-Meier method.
Results. Of the 2 172 patients with intention to treat 2 165 (99.7%) were technically successful. Of these 306 (14.1%) were performed without and 1 859 (85.9%) with embolic protection device (EPD); 96 patients (4.4%) received balloon dilation only and stenting was performed in 2 069 (95.6%) cases. Kaplan-Meier analysis of major stroke/all death and of significant restenosis (>50%) for the total population showed stroke/death rates of 4.1% (nar=1 356), 10.1% (nar=476) and 15.5% (nar=138); and restenosis rates of 1% (nar=1 363), 2% (nar=480) and 3.4% (nar=139), after 1, 3 and 5 years respectively.
Conclusion. The patency and stroke/death rates resulting from our database analysis are pleasing and indicate that CAS also on longer term is a valuable treatment method for carotid artery disease. Due to the fact that our dataset contains prospective as well as retrospective data, it may have its limitations. Until this moment, data indicating that certain patient subgroups are at increased risk for neurological complications and in-stent restenosis during and after CAS are sparse. Further multivariant analysis on this unique dataset is mandatory in order to identify any potential links in between plaque morphology, preprocedural neurological complications, risk factor distribution, procedural steps and clinical outcome.