title: Successful percutaneous transluminal angioplasty for basilar artery stenosis: technical case report.
abstract: OBJECTIVE
  We report our experience with low-pressure submaximal percutaneous transluminal angioplasty (PTA) for basilar artery stenosis of > 90%. This treatment resulted in a favorable clinical course and satisfactory improvement of posterior cerebral circulation.
  
  
  METHODS
  This technique was applied to two patients with repeated basilar arterial ischemic symptoms that were resistant to medical treatment.
  
  
  METHODS
  Low-pressure submaximal PTA was performed with use of a smaller balloon (2.0-mm diameter) and lower inflation pressure (< or = 303,975 Pa) than previously reported.
  
  
  RESULTS
  Despite basilar arteries with 50 and 60% residual stenosis, the clinical symptoms and hemodynamics in the basilar arterial territory as assessed using single photon emission tomography were markedly improved after PTA. Follow-up angiographic evaluation demonstrated the absence of restenosis, and improved cerebral blood flow was maintained. Neither patient has developed any new neurological deficits 10 and 13 months after the PTA, respectively.
  
  
  CONCLUSIONS
  Submaximal PTA may have reduced the high risk associated with this procedure, and cerebral blood flow measurement may be a useful tool to assess whether this technique will produce adequate results.
authors.affiliation: Department of Neurological Surgery, Ehime University School of Medicine, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakatsuka
authors.forename: T
authors.initials: T
authors.lastname: Ueda
authors.forename: S
authors.initials: S
authors.lastname: Ohta
authors.forename: S
authors.initials: S
authors.lastname: Sakaki
mesh_terms: D000368:Aged; D000800:Angioplasty, Balloon / Q000295:instrumentation*; D001921:Brain / Q000098:blood supply; D002533:Cerebral Angiography; D004867:Equipment Design; D005500:Follow-Up Studies; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D012008:Recurrence; D015899:Tomography, Emission-Computed, Single-Photon; D014715:Vertebrobasilar Insufficiency / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*