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Influence of Radial Artery Grafting on Coronary Re-intervention Rate During 13 Years Follow-up
Mojyan Safari, Eric Berreklouw, Ibrahim Ozdemir, Robert Poston, Jr.
Catharina Eeindhoven, Eindhoven, Netherlands USA.

OBJECTIVE: This study was performed to evaluate coronary re-intervention rate after CABG in patients in whom radial artery graft (Radial Group, 597 patients) or saphenous vein graft (Vein Group, 6542 patients) was used.
METHODS: Retrospectively 7202 patients with triple coronary artery disease who underwent primary CABG with Radial or Vein were studied with a maximal follow-up of 13 years. The Radial was intentionally used in younger patients. Subgroup analysis was done for different patient cohorts.
RESULTS: I Late all-cause-mortality was about twice (17.9% vs. 9%) as high in the Vein Group compared with the Radial Group (p < .0001), due to the higher mean age of the patients in the Vein Group, but after adjusting both study groups for age, late all-cause-mortality was similar in both study groups, and use of Radial was not a predictor for late mortality. Rates of percutaneous coronary intervention (PCI) and re-CABG were about twice as high (respectively 8.4% vs. 4.6%, p < .0001, and 2.3% vs. 1.1%, p < .0001) in Radial compared to Vein Group. Multivariate analysis of unadjusted study groups however showed that use of Radial was not a predictor late coronary re-intervention, but age (p = 0.001), dialysis (p = 0.002), and aortic crossclamp time (p=0.021) were. The results of the study in different subgroups will be presented.
CONCLUSIONS: Coronary reintervention rate after CABG is mostly determined by age of the patients at surgery, resulting in significantly more reinterventions in younger patients, but not related to the graft being Radial or Vein.


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