Background: To investigate clinical outcomes of various arterial grafts (AGs) vs saphenous vein grafts (VGs) to the right coronary system in patients who received left-sided bilateral internal thoracic artery revascularization.
Methods: We compared short- and long-term outcomes of all the patients operated in our center during 1996-2011, who received left-sided bilateral internal thoracic artery (left anterior descending and left circumflex) grafting and either a VG or an AG to the right coronary system.
Results: Of 1691 patients, 983 received a VG and 708 received an AG to the right coronary system: 387 gastroepiploic arteries and 321 internal thoracic artery grafts. The median follow-up was 15.7 ± 0.32 years. For the VG and AG groups, early mortality (1.6% for VG and 1.3% for AG, P = .55) and other early adverse outcomes did not differ. Long-term (up to 20 years) survival was similar (34.1% ± 3.4% for VG vs 36.0% ±2% for AG, P = .86). In multivariable analysis, VG to the right coronary artery was not found to be a predictor of inferior survival (hazard ratio: 0.99, 95% confidence interval 0.836-1.194, P = .99). Comparing 2 propensity-matched groups of 349 pairs with a VG or an AG, and accounting for the severity of the right coronary lesion, did not demonstrate differences in early outcome or late survival between the groups.
Conclusions: Early outcomes and long-term survival were comparable among patients who received left-sided bilateral internal thoracic artery revascularization, between various graft types to the right coronary system.
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