title: A rapid-exchange monorail stent system for salvage of failing femoropopliteal bypass grafts.
abstract: OBJECTIVE
  To analyze the safety and effectiveness of a new monorail stent system for the treatment of failing femoropopliteal bypass grafts.
  
  
  METHODS
  Acute distal occlusions or stenoses of femoropopliteal bypass grafts were treated with balloon-expandable stents (13 or 18-mm diameter) pre-mounted on a monorail balloon catheter system. The delivery system was assessed subjectively for (1). compatibility with the sheath, (2). lesion crossing potential, (3). radiopacity, (4). flexibility of the catheter, (5). adequacy of stent expansion, and (5). balloon refolding. In 8 failing bypass grafts with distal lesions, the delivery system successfully deployed the stent at the desired location. Sheath compatibility, catheter flexibility, lesion crossing, and stent expansion were rated "excellent" by all examiners for the 18-mm device. Radiopacity of the mounted stent was graded "good" before and during positioning, but only "sufficient" following expansion. For this type of lesion, the investigators rated the overall performance of the device superior to conventional "over-the-wire" systems.
  
  
  CONCLUSIONS
  The monorail balloon-expandable stent delivery system provides rapid introduction of the device over the guidewire, and its low profile facilitates the use of small sheaths to minimize access-site complications.
authors.affiliation: Klinik für Diagnostische Radiologie, Christian-Albrechts-Universität Kiel, Germany. jahnke@medscape.com
authors.forename: Thomas
authors.initials: T
authors.lastname: Jahnke
authors.forename: Joachim
authors.initials: J
authors.lastname: Brossmann
authors.forename: Knut
authors.initials: K
authors.lastname: Walluscheck
authors.forename: Martin
authors.initials: M
authors.lastname: Heller
authors.forename: Stefan
authors.initials: S
authors.lastname: Müller-Hülsbeck
mesh_terms: D015901:Angiography, Digital Subtraction; D005263:Femoral Artery; D006083:Graft Occlusion, Vascular / Q000628:therapy*; D006801:Humans; D011138:Polytetrafluoroethylene; D011150:Popliteal Artery; D011474:Prosthesis Design; D016879:Salvage Therapy; D015607:Stents; D016896:Treatment Outcome; D014654:Vascular Patency
chemical_list: D011138:Polytetrafluoroethylene