open access

Vol 9, No 2 (2007)
Published online: 2007-06-27
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Covered self-expanding stent for endovascular treatment of carotid artery stenosis: feasibility, technical success and restenosis rate

Marek Krzanowski, Wojciech Bodzoń, Lidia Słowik, Rafał Niżankowski, Andrzej Szczeklik
Chirurgia Polska 2007;9(2):61-68.

open access

Vol 9, No 2 (2007)
Published online: 2007-06-27

Abstract

Background: To assess the feasibility, technical success and the rate of in-stent restenosis of Carotid Artery Stenting (CAS) using a covered self-expanding stent.
Material and methods: Fifty four (54) patients aged 65.75 ± 9.37 years (mean ± standard deviation) were enrolled in an open prospective clinical observation of filter-protected Carotid Artery Stenting (CAS) using a self-expanding covered stent. Altogether 56 arteries were treated. The feasibility of covered stent implantation, the technical success and the restenosis rate during a mean 16.5 (a range of 3-24) months follow-up were assessed. A high resolution color coded ultrasound was used to detect restenosis.
Results: The stents were implanted successfully and good angiographic results were obtained in 53 patients and 55 arteries. In 2 cases two covered stents had to be implanted because of an initially incomplete coverage of the target lesions. There was one acute thrombosis of the internal carotid artery and two early in-stent restenoses due to lesion recoil. One late stenosis was seen at a 1 year follow-up. The patient was successfully treated with another CAS with neuroprotection. One total occlusion of a stent was detected 24 months after the CAS. Altogether the restenosis rate was 7.1%.
Conclusions: Carotid artery stenosis can be successfully treated with a covered self-expanding stent with a low restenosis rate at a mean of 16.5 months. Randomized controlled trials comparing the safety of CAS using covered stents vs. bare metal stents seem justified.

Abstract

Background: To assess the feasibility, technical success and the rate of in-stent restenosis of Carotid Artery Stenting (CAS) using a covered self-expanding stent.
Material and methods: Fifty four (54) patients aged 65.75 ± 9.37 years (mean ± standard deviation) were enrolled in an open prospective clinical observation of filter-protected Carotid Artery Stenting (CAS) using a self-expanding covered stent. Altogether 56 arteries were treated. The feasibility of covered stent implantation, the technical success and the restenosis rate during a mean 16.5 (a range of 3-24) months follow-up were assessed. A high resolution color coded ultrasound was used to detect restenosis.
Results: The stents were implanted successfully and good angiographic results were obtained in 53 patients and 55 arteries. In 2 cases two covered stents had to be implanted because of an initially incomplete coverage of the target lesions. There was one acute thrombosis of the internal carotid artery and two early in-stent restenoses due to lesion recoil. One late stenosis was seen at a 1 year follow-up. The patient was successfully treated with another CAS with neuroprotection. One total occlusion of a stent was detected 24 months after the CAS. Altogether the restenosis rate was 7.1%.
Conclusions: Carotid artery stenosis can be successfully treated with a covered self-expanding stent with a low restenosis rate at a mean of 16.5 months. Randomized controlled trials comparing the safety of CAS using covered stents vs. bare metal stents seem justified.
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Keywords

carotid artery; stenosis; stent; microembolism; covered stent; self-expanding stent

About this article
Title

Covered self-expanding stent for endovascular treatment of carotid artery stenosis: feasibility, technical success and restenosis rate

Journal

Chirurgia Polska (Polish Surgery)

Issue

Vol 9, No 2 (2007)

Pages

61-68

Published online

2007-06-27

Bibliographic record

Chirurgia Polska 2007;9(2):61-68.

Keywords

carotid artery
stenosis
stent
microembolism
covered stent
self-expanding stent

Authors

Marek Krzanowski
Wojciech Bodzoń
Lidia Słowik
Rafał Niżankowski
Andrzej Szczeklik

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