title: Short- and long-term results of radial artery and saphenous vein grafts in the right coronary system: a propensity-matched study.
abstract: OBJECTIVE
  The selection of optimal grafts for the right coronary artery remains controversial. This study aims to evaluate the short- and long-term results of radial artery (RA) grafts and saphenous vein grafts (SVGs) to the right coronary artery.
  
  
  METHODS
  We reviewed, retrospectively, isolated coronary artery bypass grafts, placed between 1997 and 2007, and compared the long-term results of patients who received RA (n = 110) grafts with those of patients who received SVGs (n = 264) using propensity-score matching for risk. The preoperative predictors of graft occlusion were investigated on a per case basis.
  
  
  RESULTS
  Superior survival was noted in the unmatched RA group, but late outcomes after propensity-score matching yielded 91 patient pairs that were similar in the two groups. Graft failure was not correlated with mortality, but showed strong correlation with cardiac events in all patients. The predictors of graft occlusion in the RA group were mild proximal stenosis and low indexing glomerular filtration rates for body surface area, whereas those in the SVG were female gender and off-pump coronary artery bypass grafting.
  
  
  CONCLUSIONS
  There were no significant differences in long-term outcomes between the RA and SVG groups. Predictors of graft occlusion differed between the groups. Notably, renal dysfunction impaired radial patency, emphasizing the importance of careful graft selection.
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Shohei
authors: S
authors: Yoshida
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan. snumat@yahoo.co.jp.
authors: Satoshi
authors: S
authors: Numata
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Yasushi
authors: Y
authors: Tsutsumi
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Osamu
authors: O
authors: Monta
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Sachiko
authors: S
authors: Yamazaki
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Hiroyuki
authors: H
authors: Seo
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Takaaki
authors: T
authors: Samura
authors: Department of Cardiovascular Surgery, Fukui Cardiovascular Center, Shinbo 2-228, Fukui, 910-0833, Japan.
authors: Hirokazu
authors: H
authors: Ohashi
mesh_terms: D000368:Aged; D001026:Coronary Artery Bypass / Q000379:methods / Q000401:mortality; D003331:Coronary Vessels / Q000601:surgery*; D005260:Female; D006083:Graft Occlusion, Vascular; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011237:Predictive Value of Tests; D057216:Propensity Score; D017534:Radial Artery / Q000637:transplantation*; D012189:Retrospective Studies; D012306:Risk; D012501:Saphenous Vein / Q000637:transplantation*; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome
keywords: CABG, arterial grafts; CABG, venous grafts; Coronary artery bypass grafts