title: Primary placement of Palmaz long medium stents in transjugular intrahepatic portosystemic shunts.
abstract: OBJECTIVE
  To describe our results with primary placement of the long-medium Palmaz stent for transjugular intrahepatic portosystemic shunts (TIPS).
  
  
  METHODS
  Between December 1997 and December 1998 primary placement of long-medium Palmaz stents was performed for TIPS procedures in 17 patients. Patency was determined with ultrasound, angiography, or pathologic examination in the event of transplant.
  
  
  RESULTS
  Primary patency was achieved in 13 of 17 patients (76.5%) (follow up, 1-399 days; mean, 99 days). Secondary patency was achieved in 17 of 17 patients (100%) (follow-up, 1-399 days; mean, 110 days). Among the four patients who required revision, the mean time to revision from initial shunt creation was 81 days (range, 13-125 days). Two of these four patients had symptoms of worsening ascites as well as abnormal ultrasound findings prior to their revision; the other two patients were asymptomatic and had abnormal ultrasound findings only. Revisions were performed for intimal hyperplasia within the stent in three of the patients and acute thrombus within the stent in the remaining patient. Kaplan-Meier survival analysis for primary patency yielded mean survival time of 265 days (standard error, 52 days).
  
  
  CONCLUSIONS
  The long-medium Palmaz stent is a viable stent for creation of TIPS shunts.
authors.affiliation: Department of Radiology, University of Washington Medical Center, Seattle 98195, USA. jjborsa@u.washington.edu
authors.forename: J J
authors.initials: JJ
authors.lastname: Borsa
authors.forename: A B
authors.initials: AB
authors.lastname: Fontaine
authors.forename: E K
authors.initials: EK
authors.lastname: Hoffer
authors.forename: R D
authors.initials: RD
authors.lastname: Bloch
authors.forename: E
authors.initials: E
authors.lastname: Tong
authors.forename: K V
authors.initials: KV
authors.lastname: Kowdley
authors.forename: U P
authors.initials: UP
authors.lastname: Schmiedl
mesh_terms: D001201:Ascites / Q000628:therapy; D004932:Esophageal and Gastric Varices / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D019168:Portasystemic Shunt, Transjugular Intrahepatic; D015607:Stents; D013997:Time Factors