title: Residual stenosis after conventional balloon angioplasty for hemodialysis shunt failure: treatment with metallic stent placement and post-balloon dilatation.
abstract: OBJECTIVE
  The usefulness of metallic stent placement and post-balloon dilatation was investigated for patients with residual stenosis after conventional percutaneous transluminal balloon angioplasty (balloon PTA) of dialysis shunt vessels.
  
  
  METHODS
  Among 92 patients who had received balloon PTA for dialysis shunt vessels, seven patients who showed a residual waist on the balloon even under maximum inflation were enrolled in this study. In these patients with residual stenosis after balloon PTA, we inserted a stent in the residual stenosis, and post-balloon dilatation was immediately applied using the same balloon catheter.
  
  
  RESULTS
  After balloon PTA, the average percent diameter stenosis declined to 45.5 +/- 7.30%, and the stenosis was further improved to an average of 19.3 +/- 7.09% after the placement of a stent and the additional balloon PTA. The average percent diameter dilatation of the balloon before the placement of a stent was 65.8 +/- 12.7%, while the average dilatation increased to 84.1 +/- 8.96% after the placement of a stent. Dialysis became possible immediately after the procedure in all cases.
  
  
  CONCLUSIONS
  Metallic stent placement and post-balloon dilatation was effective for patients with residual stenosis after conventional balloon PTA of dialysis shunt vessels.
authors.affiliation: Department of Radiology, Kansai Medical University, Osaka, Japan.
authors.forename: Shuji
authors.initials: S
authors.lastname: Kariya
authors.forename: Noboru
authors.initials: N
authors.lastname: Tanigawa
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kojima
authors.forename: Atsushi
authors.initials: A
authors.lastname: Komemushi
authors.forename: Tomokuni
authors.initials: T
authors.lastname: Shiraishi
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kawanaka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Sawada
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000800:Angioplasty, Balloon; D001166:Arteriovenous Shunt, Surgical; D002404:Catheterization; D005260:Female; D006083:Graft Occlusion, Vascular / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis / Q000295:instrumentation; D015607:Stents; D017211:Treatment Failure; D016896:Treatment Outcome; D014654:Vascular Patency