title: Use of the radial artery graft after transradial catheterization: is it suitable as a bypass conduit?
abstract: BACKGROUND
  The suitability of the radial artery after transradial catheterization as a bypass conduit has been of great concern to surgeons.
  
  
  METHODS
  A total of 67 patients underwent isolated coronary artery bypass grafting using the radial artery: 22 patients received preoperative transradial catheterization (group 1) and 45 patients did not receive transradial catheterization (group 2). Those patients were retrospectively reviewed.
  
  
  RESULTS
  Patient characteristics, operative procedures, and early clinical outcome were not different between groups. The stenosis-free graft patency rates in groups 1 and 2 were 88% (16 of 18 patients) and 90% (38 of 42 patients) in the left internal thoracic artery (p = 0.87); 77% (17 of 22 patients) and 98% (48 of 49 patients) in the radial artery (p = 0.017); and 87% (13 of 15 patients) and 84% (21 of 25 patients) in the saphenous vein (p = 0.42), respectively. Intimal hyperplasia of the radial artery was observed in 68% (11 of 16 patients) in group 1 and in 39% (14 of 34 patients) in group 2 (p = 0.046).
  
  
  CONCLUSIONS
  Transradial catheterization reduced early graft patency and caused intimal hyperplasia, although it did not affect early clinical outcomes. We suggest that the use of the radial artery as a bypass conduit after transradial catheterization should be undertaken cautiously.
authors: Department of Cardiovascular Surgery, Maizuru Mutual Hospital, Hama, Maizuru, Japan. h.kamiya@triton.ocn.ne.jp
authors: Hiroyuki
authors: H
authors: Kamiya
authors: Teruaki
authors: T
authors: Ushijima
authors: Taro
authors: T
authors: Kanamori
authors: Chikako
authors: C
authors: Ikeda
authors: Chiemi
authors: C
authors: Nakagaki
authors: Keishi
authors: K
authors: Ueyama
authors: Go
authors: G
authors: Watanabe
mesh_terms: D000368:Aged; D002404:Catheterization / Q000379:methods; D015331:Cohort Studies; D017023:Coronary Angiography / Q000379:methods; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000379:methods*; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000401:mortality / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000517:prevention & control*; D006084:Graft Rejection; D006085:Graft Survival; D006801:Humans; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care / Q000379:methods; D011300:Preoperative Care / Q000379:methods; D011336:Probability; D017534:Radial Artery / Q000473:pathology / Q000637:transplantation*; D012189:Retrospective Studies; D018570:Risk Assessment; D012720:Severity of Illness Index; D015996:Survival Rate; D016896:Treatment Outcome; D014654:Vascular Patency / Q000502:physiology