title: Graft selection for the right coronary artery territory in off-pump coronary artery bypass.
abstract: BACKGROUND
  The ideal bypass conduit in a right coronary artery (RCA) system remains controversial.
  
  
  METHODS
  We analyzed 121 patients who underwent off-pump coronary artery bypass with internal thoracic arteries for the left coronary artery system and either in situ a right gastroepiploic artery (RGEA; n = 66) or a saphenous vein graft (SVG; n = 55) for the RCA system were enrolled. Follow-up coronary computed tomographic angiographic data were reviewed.
  
  
  RESULTS
  The RGEA group showed higher graft patency at 5 years, especially in high grade stenosis (≥ 80%; p = 0.009). In the SVG group, no difference was found between high grade stenosis and low grade stenosis. Freedom from adverse cardiac events at 5 years was higher in the RGEA group (p = 0.006). On multivariate analysis, low grade stenosis of RCA was predictive of graft failure (p = 0.029, hazard ratio = 10.9).
  
  
  CONCLUSIONS
  In high grade stenosis of RCA, the RGEA group showed higher patency rate. The patency rate of SVG was not dependent on the degree of stenosis of RCA.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Seoul, Republic of Korea.
authors.forename: Dong Seop
authors.initials: DS
authors.lastname: Jeong
authors.forename: Hae Young
authors.initials: HY
authors.lastname: Lee
authors.forename: Ho Ki
authors.initials: HK
authors.lastname: Min
authors.forename: Wook Sung
authors.initials: WS
authors.lastname: Kim
authors.forename: Kiick
authors.initials: K
authors.lastname: Sung
authors.forename: Pyo Won
authors.initials: PW
authors.lastname: Park
authors.forename: Young Tak
authors.initials: YT
authors.lastname: Lee
mesh_terms: D000368:Aged; D016009:Chi-Square Distribution; D017023:Coronary Angiography / Q000379:methods; D047549:Coronary Artery Bypass, Off-Pump / Q000009:adverse effects / Q000379:methods* / Q000401:mortality; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D018572:Disease-Free Survival; D005260:Female; D024405:Gastroepiploic Artery / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000637:transplantation*; D006083:Graft Occlusion, Vascular / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008323:Mammary Arteries / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D015999:Multivariate Analysis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000637:transplantation*; D012720:Severity of Illness Index; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014654:Vascular Patency