Previous coronary stents do not increase early and long-term adverse outcomes in patients undergoing off-pump coronary artery bypass grafting: A propensity-matched comparison

ObjectiveThe aim of our study was to compare the early and long-term outcomes of patients undergoing off-pump coronary artery bypass grafting (CABG) with and without previous coronary stents.MethodsBetween September 2004 and September 2011, 269 patients with previous stents underwent first-time isolated off-pump CABG. These patients were compared with 897 patients without previous stent. A propensity score-matching analysis was performed to compare early and late outcomes between the groups. Mean follow-up time was 43.4 months after surgery.ResultsPatients with previous stents were more likely to be men (85.9% in the stent group vs 79.4% in the no-stent group; P = .022) and more likely to have prior myocardial infarction (60.2% vs 36.8%; P < .001). Mean number of anastomoses was lower in patients with previous stents than in patients without previous stents (4.0 vs 4.2; P = .037). There was no difference in the use of bilateral internal thoracic artery graft between the groups (88.8% vs 89.1%; P > .999). After propensity adjustment for preoperative characteristics, both operative death (0.7% vs 1.5%; P = .414) and the major complications rates (7.8% vs 7.5%; P = .869) were similar between the groups. The actuarial survival rate at 7 years was not different between the groups (87.2% ± 3.2% vs 84.8% ± 2.9%; P = .470). Furthermore, freedom from major adverse cardiac and cerebrovascular events at 7 years were similar between the groups (78.9% ± 3.8% vs 77.6% ± 3.3%; P = .811).ConclusionsPrevious coronary stents do not increase early and long-term morbidity or mortality in patients undergoing off-pump CABG.