title: Hepatic artery angioplasty after liver transplantation: experience in 21 allografts.
abstract: OBJECTIVE
  To assess whether percutaneous transluminal angioplasty (PTA) can help prolong allograft survival and improve allograft function in patients with hepatic artery stenosis after liver transplantation.
  
  
  METHODS
  Hepatic artery PTA was attempted in 19 patients with 21 allografts over 12 years. The postangioplasty clinical course was retrospectively analyzed. Liver enzyme levels were measured before and after PTA to determine if changes in liver function occurred after successful PTA.
  
  
  RESULTS
  Technical success was achieved in 17 allografts (81%). Retransplantation was required for four of 17 allografts (24%) in which PTA was successful and four of four allografts in which PTA was unsuccessful; this difference was significant (P = .03). Two major procedure-related complications occurred: an arterial leak that required surgical repair and an extensive dissection that necessitated retransplantation 14 months after PTA. Hepatic failure necessitated repeat transplantation in seven cases from 2 weeks to 27 months (mean, 8.4 months) after PTA. Six patients died during follow-up, three of whom had undergone repeat transplantation. Markedly elevated liver enzyme levels at presentation were associated with an increased risk of retransplantation or death regardless of the outcome of PTA.
  
  
  CONCLUSIONS
  PTA of hepatic artery stenosis after liver transplantation is relatively safe and may help decrease allograft loss due to thrombosis. Marked allograft dysfunction at presentation is a poor prognostic sign; thus, timely intervention is important.
authors.affiliation: Department of Radiology, University of Pittsburgh Medical Center, PA 15213, USA.
authors.forename: P D
authors.initials: PD
authors.lastname: Orons
authors.forename: A B
authors.initials: AB
authors.lastname: Zajko
authors.forename: K M
authors.initials: KM
authors.lastname: Bron
authors.forename: G T
authors.initials: GT
authors.lastname: Trecha
authors.forename: R R
authors.initials: RR
authors.lastname: Selby
authors.forename: J J
authors.initials: JJ
authors.lastname: Fung
mesh_terms: D000368:Aged; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D005260:Female; D006085:Graft Survival; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D007223:Infant; D008099:Liver / Q000201:enzymology; D016031:Liver Transplantation; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D015641:Radiography, Interventional; D012086:Reoperation; D012189:Retrospective Studies