title: Carotid artery stenting without post-stenting balloon dilatation.
abstract: OBJECTIVE
  To evaluate the clinical outcome and MRI findings after carotid artery stenting (CAS) without post-dilatation.
  
  
  METHODS
  Between May 2005 and April 2012, a total of 169 consecutive patients (61.4% symptomatic) underwent 176 CAS procedures performed with an embolic protection device (GuardWire, n=116; FilterWire EZ, n=60). All stents were deployed without post-dilatation. Periprocedural complications and mid-term outcomes were analyzed.
  
  
  RESULTS
  The stroke rate was 2.3% within 30 days post-CAS (asymptomatic patients 1.5%; symptomatic patients 2.8%). Cerebral infarction occurred in one asymptomatic patient (1.5%) and one symptomatic patient (0.9%). Intracranial hemorrhage occurred in two symptomatic patients (1.9%). Post-CAS diffusion-weighted imaging (DWI) revealed a high-intensity area in 26 of 176 procedures (14.8%). Ipsilateral stroke after 31 days occurred in two patients (1.1%) and restenosis occurred in six (3.4%). A post-CAS comparison of the embolic protection devices revealed no difference in stroke incidence within 30 days and in DWI high-intensity area.
  
  
  CONCLUSIONS
  Our CAS procedure without post-dilatation is feasible, safe and associated with a low incidence of stroke and restenosis.
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan Department of Neurosurgery, Faculty of Medicine, Saga University, Saga, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ogata
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Sonobe
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Kato
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Tomosato
authors.initials: T
authors.lastname: Yamazaki
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Kasuya
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Go
authors.initials: G
authors.lastname: Ikeda
authors.affiliation: Department of Neurosurgery, National Hospital Organization, Mito Medical Center, Ibaraki, Japan.
authors.forename: Shunichiro
authors.initials: S
authors.lastname: Miki
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Saga University, Saga, Japan.
authors.forename: Toshio
authors.initials: T
authors.lastname: Matsushima
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000800:Angioplasty, Balloon / Q000009:adverse effects / Q000706:statistics & numerical data*; D002339:Carotid Arteries / Q000601:surgery*; D016893:Carotid Stenosis / Q000601:surgery*; D057510:Endovascular Procedures / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D006083:Graft Occlusion, Vascular / Q000453:epidemiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D012189:Retrospective Studies; D015607:Stents / Q000009:adverse effects; D020521:Stroke / Q000209:etiology / Q000628:therapy
keywords: Artery; Cervical; Intervention; Stent; Technique