Surgery for Cerebral Stroke
Online ISSN : 1880-4683
Print ISSN : 0914-5508
ISSN-L : 0914-5508
Topics: Treatment Strategies for Asymptomatic Carotid Stenosis
Clinical Results of Carotid Stenting for Asymptomatic Carotid Stenosis
Osamu MASUOTomoaki TERADAYoshinari NAKAMURAMitsuharu TSUURAHiroyuki MATSUMOTOTomoyuki TSUMOTOHiroo YAMAGAHiroshi MORIWAKITakashi NISHIGUCHITakuhei KIDOToru ITAKURA
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2006 Volume 34 Issue 5 Pages 328-333

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Abstract
We have performed carotid artery stenting (CAS) for 327 patients with ICA stenosis in our institutes using various embolic protection devices since 1997. After establishment of embolic protection methods in 1999, we have performed CAS for 114 asymptomatic carotid stenosis of more than 60%, according to the criteria of ACAS trial.
In this paper, we report our initial results (perioperative complication, morbidity/mortality at 30 days after CAS, changes in stenosis ratio), rate of re-stenosis, and midterm results in cases followed more than 3 years after CAS. The mean preoperative stenosis ratio, 75.6%, remarkably decreased to 5.6% after CAS. The morbidity/motality rate at 30 days after CAS was 0.8% (1/114 cases). In 22 cases, followed up more than 3 years after CAS, no ipsilateral ischemic stroke was encountered.
CAS for asymptomatic carotid stenosis is an effective and safe treatment to alleviate stenosis and prevent future ischemic stroke as well as carotid endarterectomy (CEA). Randomized controlled trials, based on the natural history of carotid stenosis, are needed in the near future to establish the indication of CAS for asymptomatic carotid stenosis.
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© 2006 by The Japanese Society on Surgery for Cerebral Stroke
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