title: Symptomatic stenosis of the vertebrobasilar arteries: results of extra- and intracranial stent-PTA.
abstract: OBJECTIVE
  About half of all transient ischaemic attacks (TIAs) or strokes in the posterior circulation are caused by the arterial stenosis. The purposes of this study were to determine the safety of stent-assisted percutaneous transluminal angioplasty (stent-PTA) and its efficacy for the prevention of recurrent stroke in patients with symptomatic artery stenosis in the extra- and intracranial posterior circulation.
  
  
  METHODS
  Forty-six patients with a previous stroke or TIA who received balloon-mounted coronary stents for vertebral artery origin stenosis (VAOS; 29 patients) or self-expanding nitinol stents for vertebrobasilar intracranial stenosis (VBIS; 17 patients) were followed-up for a mean of 24.1 (VAOS) and 12.7 (VBIS) months.
  
  
  RESULTS
  When all cause morbidity/mortality within 30 days from stent-PTA and stroke or death from stroke in the treated vascular territory during the first 12 months of follow-up are combined, the incidence of periprocedural complications and disease progression for the first year is 10.3% in VAOS patients and 17.6% in the VBIS group. Vessel restenosis >/=50% was found in 52.0% of VAOS and in 32.1% of VBIS patients who completed 6 months follow-up.
  
  
  CONCLUSIONS
  We observed a higher periprocedural complication rate for patients with VBIS and a higher rate of restenosis in VAOS patients after stent-PTA for symptomatic artery stenosis.
authors.affiliation: Department of Neurology, Medical University of Graz, Austria. thomas.seifert@meduni-graz.at
authors.forename: T
authors.initials: T
authors.lastname: Seifert
authors.forename: M
authors.initials: M
authors.lastname: Augustin
authors.forename: G E
authors.initials: GE
authors.lastname: Klein
authors.forename: S
authors.initials: S
authors.lastname: Horner
authors.forename: K
authors.initials: K
authors.lastname: Niederkorn
authors.forename: F
authors.initials: F
authors.lastname: Fazekas
mesh_terms: D000328:Adult; D000368:Aged; D017130:Angioplasty / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents / Q000706:statistics & numerical data*; D014715:Vertebrobasilar Insufficiency / Q000209:etiology / Q000401:mortality / Q000503:physiopathology* / Q000628:therapy*; D055815:Young Adult