title: Five-year angiographic patency of radial artery bypass grafts.
abstract: BACKGROUND
  Little information exists regarding mid-term and long-term patency of radial artery grafts.
  
  
  RESULTS
  We performed restudy coronary angiography at 5.2+/-0.4 years after surgery on 50 asymptomatic patients who had undergone coronary artery bypass graft surgery, using at least 1 radial artery graft, to determine both graft patency and presence of narrowing. We examined preoperative clinical or angiographic variables that might predict graft occlusion. Radial artery graft patency was 89%, with 91% of grafts free of narrowing. Preoperative New York Heart Association anginal class < or =2, target vessel proximal stenosis < or =70%, and small target vessel supply territory were predictive of graft occlusion.
  
  
  CONCLUSIONS
  At 5 years after surgery, radial artery grafts have disease-free patency rates that are similar to other graft types.
authors.affiliation: Prince Charles Hospital, Rode Rd, Chermside, Brisbane, Australia 4032. Nick_Bett@health.qld.gov.au
authors.forename: James
authors.initials: J
authors.lastname: Cameron
authors.forename: Shailendra
authors.initials: S
authors.lastname: Trivedi
authors.forename: Gregory
authors.initials: G
authors.lastname: Stafford
authors.forename: J H Nicholas
authors.initials: JH
authors.lastname: Bett
mesh_terms: D002121:Calcium Channel Blockers / Q000627:therapeutic use; D015331:Cohort Studies; D003131:Combined Modality Therapy; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000379:methods* / Q000706:statistics & numerical data; D003327:Coronary Disease / Q000188:drug therapy / Q000601:surgery; D023903:Coronary Restenosis / Q000000981:diagnostic imaging / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017534:Radial Artery / Q000601:surgery*; D013318:Stroke Volume; D016896:Treatment Outcome; D014654:Vascular Patency
chemical_list: D002121:Calcium Channel Blockers