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(Circulation. 2004;110:II-23 – II-26.)
© 2004 American Heart Association, Inc.

Surgery for Coronary Artery Disease

Five-Year Angiographic Patency of Radial Artery Bypass Grafts

James Cameron, MD; Shailendra Trivedi, MD; Gregory Stafford, MD; J. H. Nicholas Bett, MD

From Prince Charles Hospital (J.C., G.S., J.H.N.B.), Brisbane, Australia; Apollo Hospital (S.T.), Indore, India.

Correspondence to Dr. James Cameron, Prince Charles Hospital, Rode Rd, Chermside, Brisbane, Australia 4032. E-mail Nick_Bett{at}health.qld.gov.au

Background— Little information exists regarding mid-term and long-term patency of radial artery grafts.

Methods and 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 2, target vessel proximal stenosis 70%, and small target vessel supply territory were predictive of graft occlusion.

Conclusion— At 5 years after surgery, radial artery grafts have disease-free patency rates that are similar to other graft types.

Key Words: revascularization • surgery • bypass • grafting