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Mid-term outcomes of patients with PCI prior to CABG in comparison to patients with primary CABG

Authors Eifert S, Mair H, Boulesteix A, Kilian E, Adamczak M, Reichart B, Lamm P

Published 29 June 2010 Volume 2010:6 Pages 495—501

DOI https://doi.org/10.2147/VHRM.S8560

Review by Single-blind

Peer reviewer comments 2

Sandra Eifert1, Helmut Mair1, Anne-Laure Boulesteix2, Eckehard Kilian1, Martin Adamczak1, Bruno Reichart1, Peter Lamm1

1Department of Cardiac Surgery, 2Department of Medical Informatics, Biometry and Epidemiology (IBE), Ludwig Maximilians University, Munich, Germany

Abstract: The number of percutaneous coronary interventions (PCI) prior to coronary artery bypass grafting (CABG) increased drastically during the last decade. Patients are referred for CABG with more severe coronary pathology, which may influence postoperative outcome. Outcomes of 200 CABG patients, collected consecutively in an observational study, were compared (mean follow-up: 5 years). Group A (n = 100, mean age 63 years, 20 women) had prior PCI before CABG, and group B (n = 100, mean age 66, 20 women) underwent primary CABG. In group A, the mean number of administered stents was 2. Statistically significant results were obtained for the following preoperative criteria: previous myocardial infarction: 54 vs 34 (P = 0.007), distribution of CAD (P < 0.0001), unstable angina: 27 vs 5 (P < 0.0001). For intraoperative data, the total number of established bypasses was 2.43 ± 1.08 vs 2.08 ± 1.08 (P = 0.017), with the number of arterial bypass grafts being: 1.26 ± 0.82 vs 1.07 ± 0.54 (P = 0.006). Regarding the postoperative course, significant results could be demonstrated for: adrenaline dosage (0.83 vs 0.41 mg/h; [p is not significant (ns)]) administered in 67 group A vs 47 group B patients (P = 0.006), and noradrenaline dosage (0.82 vs 0.87 mg/h; ns) administered in 46 group A vs 63 group B patients (P = 0.023), CK/troponine I (P = 0.002; P < 0.001), postoperative resuscitation (6 vs 0; P = 0.029), intra aortic balloon pump 12 vs 1 (P = 0.003), and 30-day mortality (9% in group A vs 1% in group B; P = 0.018). Clopidogrel was administered in 35% of patients with prior PCI and in 19% of patients without prior PCI (P = 0.016). Patients with prior PCI presented for CABG with more severe CAD. Morbidity, mortality and reoperation rate during mid term were significantly higher in patients with prior PCI.
Keywords: CABG, CABG and PCI , CAD, outcome

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