title: Symptom differences and pretreatment asymptomatic interval affect outcomes of stenting for intracranial atherosclerotic disease.
abstract: OBJECTIVE
  Different types of symptomatic intracranial stenosis may respond differently to interventional therapy. We investigated symptomatic and pathophysiologic factors that may influence clinical outcomes of patients with intracranial atherosclerotic disease who were treated with stents.
  
  
  METHODS
  A retrospective analysis was performed of patients treated with stents for intracranial atherosclerosis at 4 centers. Patient demographics and comorbidities, lesion features, treatment features, and preprocedural and postprocedural functional status were noted. χ(2) univariate and multivariate logistic regression analysis was performed to assess technical results and clinical outcomes.
  
  
  RESULTS
  One hundred forty-two lesions in 131 patients were analyzed. Lesions causing hypoperfusion ischemic symptoms were associated with fewer strokes by last contact [χ(2) (1, n = 63) = 5.41, P = .019]. Nonhypoperfusion lesions causing symptoms during the 14 days before treatment had more strokes by last contact [χ(2) (1, n = 136), 4.21, P = .047]. Patients treated with stents designed for intracranial deployment were more likely to have had a stroke by last contact (OR, 4.63; P = .032), and patients treated with percutaneous balloon angioplasty in addition to deployment of a self-expanding stent were less likely to be stroke free at point of last contact (OR, 0.60; P = .034).
  
  
  CONCLUSIONS
  More favorable outcomes may occur after stent placement for lesions causing hypoperfusion symptoms and when delaying stent placement 7-14 days after most recent symptoms for lesions suspected to cause embolic disease or perforator ischemia. Angioplasty performed in addition to self-expanding stent deployment may lead to worse outcomes, as may use of self-expanding stents rather than balloon-mounted stents.
authors.affiliation: From the Department of Radiology, Santa Clara Valley Medical Center, San Jose, California (M.D.A.).
authors.forename: M D
authors.initials: MD
authors.lastname: Alexander
authors.affiliation: Departments of Neurointerventional Surgery (P.M.M.).
authors.forename: P M
authors.initials: PM
authors.lastname: Meyers
authors.affiliation: Department of Neurology, California Pacific Medical Center, San Francisco, California (J.D.E.).
authors.forename: J D
authors.initials: JD
authors.lastname: English
authors.affiliation: Department of Medicine, St Luke's-Roosevelt Hospital, New York, New York (T.R.S.).
authors.forename: T R
authors.initials: TR
authors.lastname: Stradford
authors.affiliation: Pathology (S.S.), Columbia University, New York, New York.
authors.forename: S
authors.initials: S
authors.lastname: Sung
authors.affiliation: Departments of Neurology (W.S.S.).
authors.forename: W S
authors.initials: WS
authors.lastname: Smith
authors.affiliation: Radiology and Biomedical Imaging (V.V.H., R.T.H., C.F.D., D.L.C., S.W.H.)Neurological Surgery (V.V.H., R.T.H., C.F.D.), University of California, San Francisco, California.
authors.forename: V V
authors.initials: VV
authors.lastname: Halbach
authors.affiliation: Radiology and Biomedical Imaging (V.V.H., R.T.H., C.F.D., D.L.C., S.W.H.)Neurological Surgery (V.V.H., R.T.H., C.F.D.), University of California, San Francisco, California.
authors.forename: R T
authors.initials: RT
authors.lastname: Higashida
authors.affiliation: Radiology and Biomedical Imaging (V.V.H., R.T.H., C.F.D., D.L.C., S.W.H.)Neurological Surgery (V.V.H., R.T.H., C.F.D.), University of California, San Francisco, California.
authors.forename: C F
authors.initials: CF
authors.lastname: Dowd
authors.affiliation: Radiology and Biomedical Imaging (V.V.H., R.T.H., C.F.D., D.L.C., S.W.H.).
authors.forename: D L
authors.initials: DL
authors.lastname: Cooke
authors.affiliation: Radiology and Biomedical Imaging (V.V.H., R.T.H., C.F.D., D.L.C., S.W.H.) matthew.alexander@caa.columbia.edu.
authors.forename: S W
authors.initials: SW
authors.lastname: Hetts
mesh_terms: D000328:Adult; D000368:Aged; D017130:Angioplasty / Q000295:instrumentation* / Q000379:methods*; D001807:Blood Vessel Prosthesis; D005260:Female; D006801:Humans; D002537:Intracranial Arteriosclerosis / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care / Q000379:methods; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome; D014481:United States