Cerebral Ischemia Detected with Diffusion-weighted MR Imaging After Protected Carotid Artery Stenting: Comparison of Distal Balloon and Filter Device

Overview

Journal Korean J Radiol

Specialty Radiology

Date 2007 Aug 4

PMID 17673838

Citations 14

Authors

Suk Jung Kim

Hong Gee Roh

Pyoung Jeon

Keon Ha Kim

Kwang Ho Lee

Hong Sik Byun

Won Jin Moon

Gyeong Moon Kim

Young Wook Kim

Dong Ik Kim

Affiliations

Soon will be listed here.

Abstract

Objective: The aim of this study was to examine the incidence of ischemia during protected carotid artery stenting (CAS) as well as to compare the protective efficacy of the balloon and filter devices on diffusion-weighted MR imaging (DWI).

Materials And Methods: Seventy-one consecutive protected CAS procedures in 70 patients with a severe (> 70%) or symptomatic moderate (> 50%) carotid artery stenosis were examined. A balloon device (PercuSurge GuardWire) and a filter device (FilterWire EX/EZ, Emboshield) was used in 33 cases (CAS-B group) and 38 cases (CAS-F group) to prevent distal embolization, respectively. All the patients underwent DWI within seven days before and after the procedures. The number of new cerebral ischemic lesions on the post-procedural DWI were counted and divided into ipsilateral and contralateral lesions according to the relationship with the stenting side.

Results: New cerebral ischemic lesions were detected in 13 (39.4%) out of the 33 CAS-Bs and in 15 (39.5%) out of the 38 CAS-Fs. The mean number of total, ipsilateral and contralateral new cerebral ischemic lesion was 2.39, 1.67 and 0.73 in the CAS-B group and 2.11, 1.32 and 0.79 in the CAS-F group, respectively. No statistical differences were found between the two groups (p = 0.96, 0.74 and 0.65, respectively). The embolic complications encountered included two retinal infarctions and one hemiparesis in the CAS-B group (9.09%), and one retinal infarction, one hemiparesis and one ataxia in the CAS-F group (7.89%). There was a similar incidence of embolic complications in the two groups (p = 1.00).

Conclusion: The type of distal protection device used such as a balloon and filter does not affect the incidence of cerebral embolization after protected CAS.

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Retinal artery occlusion during carotid artery stenting with distal embolic protection device.

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Aortic arch and common carotid artery plaques with soft components pose a substantial risk of cerebral embolization during carotid stenting.

Szikra P, Boda K, Rarosi F, Thury A, Barzo P, Nemeth T Interv Neuroradiol. 2016; 22(4):438-44.

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