title: Morphological Evaluation of Proximal Anastomosis by PAS-Port(®) System in Patients with Long-Term Patent Grafts.
abstract: OBJECTIVE
  We examined grafts employing for morphological analysis of early and long-term results on proximal anastomosis with the PAS-Port(®).
  
  
  METHODS
  One hundred and four patients treated by OPCAB with PAS-Port(®) were performed postoperative MDCT. Morphological evaluation of the proximal anastomotic region was classified into three groups (A; graft was anastomosed almost perpendicularly to the aortic wall, B; graft was same type A, but subsequently curved to form an acute angle with the aortic wall, C; graft take off acute angle with the aortic wall) evaluated on planar and sagittal sections.
  
  
  RESULTS
  One hundred twenty-six PAS-Port(®) were used. Patency rate was 99.0% at discharge, 94.7% at 1 year, and no blockages were detected thereafter in patients examined. The morphology rate was A 50.6%, B 15.3% and C 34.1% on planar sections, and A 58.8%, B 10.6% and C 30.6% on sagittal sections.
  
  
  CONCLUSIONS
  The morphological evaluation of grafts revealed the degree of freedom in graft design to be relatively high and long-term patency posed no particular problem even if the layout of the proximal anastomotic region involved a relatively acute angle. The PAS-Port(®) was considered to be a highly reliable device which performed appropriate proximal anastomosis and improved the patency of vein grafting to the aortic wall.
authors: Department of Cardiovascular Surgery, Misato Central General Hospital, Misato, Saitama, Japan.
authors: Muneyasu
authors: M
authors: Kawasaki
authors: Takeshiro
authors: T
authors: Fujii
authors: Masanori
authors: M
authors: Hara
authors: Yuki
authors: Y
authors: Sasaki
authors: Tomoyuki
authors: T
authors: Katayanagi
authors: Shinnosuke
authors: S
authors: Okuma
authors: Yoshinori
authors: Y
authors: Watanabe
mesh_terms: D000368:Aged; D001011:Aorta / Q000503:physiopathology / Q000601:surgery; D001027:Aortography / Q000379:methods; D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects / Q000295:instrumentation*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D023903:Coronary Restenosis / Q000209:etiology / Q000503:physiopathology; D004867:Equipment Design; D005260:Female; D006083:Graft Occlusion, Vascular / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D008422:Materials Testing; D010690:Phlebography / Q000379:methods; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency