Initial experience of carotid artery stenting using the Carotid WALLSTENT and FilterWire EZ in Japan.
OBJECTIVE
The Carotid WALLSTENT (CWS) and Filter-Wire EZ (FWEZ) embolic protection devices for use in carotid arterial stenting (CAS) were newly approved for national health insurance coverage in Japan in April 2010. This article describes our initial experience of CAS using the CWS and FWEZ.


METHODS
A group of 14 patients (12 men, 2 women; mean age 70.1 years, range 59-83 years) with 15 carotid artery stenoses at high risk for carotid endarterectomy were treated by CAS using the CWS and FWEZ. Of these stenoses, 5 were symptomatic with ≥50% stenosis of the common or internal carotid artery (ICA), and 10 were asymptomatic with ≥80% stenosis. The rates of technical success, ICA flow impairment during filter protection, periprocedural ischemic stroke, 30-day major adverse events (MAEs) (stroke, death, myocardial infarction), and development of new ischemic lesions on diffusion-weighted imaging (DWI) were assessed.


RESULTS
CAS was successful in all cases. There was no ICA flow impairment, periprocedural ischemic stroke, or MAEs. DWI showed new ipsilateral ischemic lesions in only one patient (6.7%).


CONCLUSIONS
Our initial clinical experience using the CWS and FEWZ for CAS was generally excellent, and the incidence of postprocedural ischemic lesions was low.
Department of Radiology and Interventional Neuroradiology, Ishinkai Yao General Hospital, Yao, Japan. takayamaneuroivs@par.odn.ne.jp
Katsutoshi
K
Takayama
Toshiaki
T
Taoka
Hiroyuki
H
Nakagawa
Kaoru
K
Myouchin
Takeshi
T
Wada
Toshiteru
T
Miyasaka
Masahiko
M
Sakamoto
Akio
A
Fukusumi
Satoru
S
Iwasaki
Ryota
R
Kimura
Shinichiro
S
Kurokawa
Kimihiko
K
Kichikawa
D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D057505:Embolic Protection Devices; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D015607:Stents; D016896:Treatment Outcome
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