Abstract 16991: Coronary Bypass Surgery with Radial Artery Graft Improved Survival in the Diabetic Population
Background: There is limited information available regarding the long term outcome of using the radial artery as a coronary artery bypass graft (CABG) conduit. We attempt to analyze the twelve-year survival advantage for patients with a radial artery bypass graft.
Methods: From January 1997 to December 2001, 1248 patients who underwent first time isolated CABG surgery were analyzed. A multivariable logistic regression that included 18 baseline characteristics (i.e. age, left ventricular ejection fraction, coronary disease extent, and urgent/emergent operative status) was used to model the probability (propensity) of receiving a radial artery graft. The C statistic was 0.86. Patients were matched on their propensity score, resulting in 265 matched-pairs.
Results: 12 year survival was better (19% reduction in death risk) for patients having received a radial artery (Hazard ratio 0.81). There also was a trend toward better survival in both the male and the female population with radial artery graft although the difference was not statistically significant. In the diabetic subgroup, however, the survival benefit was prominent (39% reduction in death risk, Hazard ratio 0.61)
Conclusions: The use of the radial artery for primary coronary artery bypass grafts improved survival in general but is especially prominent in the diabetic population at 12 years.
- © 2012 by American Heart Association, Inc.