title: Initial experience with a new Yamakawa-type prosthesis for long-term percutaneous transhepatic drainage.
abstract: OBJECTIVE
  In a previous study evaluating the problems of long-term percutaneous transhepatic biliary drainage (PTBD) using Yamakawa-type prostheses in patients with benign and malignant stenoses, breakage of the tube proved to be a serious problem, occurring in 19.7 % of PTBD exchanges. As a consequence of these results, a new PTBD tube made of Tecothane has been developed.
  
  
  METHODS
  From September 1997 to September 1998, this new PTBD tube was applied in 64 patients (39 men, 25 women; median age: 70, range 29-89) in the treatment of benign (n = 30) or malignant stenoses (n=31; three stenoses remained indeterminate), and the course was followed.
  
  
  RESULTS
  A total of 134 stent exchanges were performed, 52 of these being ahead of schedule (39 %). Not a single case of breakage occurred. However, other PTBD-related problems remained unchanged. Patients accepted the new prosthesis very well; among 19 patients who had experience of both the new one and the conventional one, 11 had preferences-eight for the new one and three for the old one.
  
  
  CONCLUSIONS
  This new Tecothane prosthesis has solved the problem of PTBD breakage, which was often accompanied by serious problems. As was to be expected, other PTBD-related problems were not substantially affected. Nevertheless, this new tube represents progress in the percutaneous treatment of biliary stenoses.
authors.affiliation: Dept of Medicine II, Klinikum rechts der Isar, Technical University of Munich, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Born
authors.forename: T
authors.initials: T
authors.lastname: Rösch
authors.forename: G
authors.initials: G
authors.lastname: Willkomm
authors.forename: W
authors.initials: W
authors.lastname: Sandschin
authors.forename: N
authors.initials: N
authors.lastname: Fitz
authors.forename: N
authors.initials: N
authors.lastname: Weigert
authors.forename: R
authors.initials: R
authors.lastname: Ott
authors.forename: E
authors.initials: E
authors.lastname: Frimberger
authors.forename: H
authors.initials: H
authors.lastname: Allescher
authors.forename: M
authors.initials: M
authors.lastname: Classen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001650:Bile Duct Neoplasms / Q000556:secondary / Q000601:surgery*; D002408:Catheters, Indwelling; D001651:Cholestasis, Extrahepatic / Q000209:etiology / Q000601:surgery*; D004322:Drainage / Q000295:instrumentation*; D004724:Endoscopy; D019544:Equipment Failure Analysis; D005260:Female; D006801:Humans; D008134:Long-Term Care; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D015607:Stents