title: Restenosis after stent placement for ostial stenosis of vertebral artery.
abstract: The purpose of this study was to evaluate our initial procedural success rate and angiographical outcome of stent placement for vertebral artery (VA) stenosis at the intermediate followup period (11.3 +/- 7.3 months). Stent placement was successfully performed in 20 procedures (19 patients), resulting in a marked reduction of stenosis from 78.7 +/- 12.6 % before to 8.7% +/- 10.6 after stenting. Follow-up angiography, performed after an interval of 11.3 +/- 7.3 months, revealed restenosis greater than 50% in a total of 6 procedures (40%) out of 15. Although PTA with stent placement for stenosis affecting VA origin provided excellent initial success, restenosis occurred at a significant rate even during the intermediate follow-up period.
authors.affiliation: Department of Neurosurgery, National Cardio-Vascular Center; Osaka, Japan - skogure@hsp.neuc.go.jp.
authors.forename: S
authors.initials: S
authors.lastname: Kogure
authors.forename: N
authors.initials: N
authors.lastname: Sakai
authors.forename: K
authors.initials: K
authors.lastname: Iihara
authors.forename: H
authors.initials: H
authors.lastname: Sakai
authors.forename: H
authors.initials: H
authors.lastname: Sakaida
authors.forename: T
authors.initials: T
authors.lastname: Higashi
authors.forename: J C
authors.initials: JC
authors.lastname: Takahashi
authors.forename: H
authors.initials: H
authors.lastname: Ohta
authors.forename: T
authors.initials: T
authors.lastname: Nagamine
authors.forename: R
authors.initials: R
authors.lastname: Anei
authors.forename: A
authors.initials: A
authors.lastname: Soeda
authors.forename: A
authors.initials: A
authors.lastname: Taniguchi
authors.forename: I
authors.initials: I
authors.lastname: Nagata