Bilateral internal thoracic artery versus radial artery multi-arterial bypass grafting: a report from the STS database†
2019
OBJECTIVES: Multi-arterial bypass grafting with bilateral internal thoracic (BITA-MABG) or radial (RA-MABG) arteries improves long-term survival, but its increased complexity raises perioperative safety concerns. We compared perioperative outcomes of RA-MABG and BITA-MABG using the Society of Thoracic Surgeons Adult Cardiac Surgery Database (STS-ACSD). METHODS: We analysed the 2004-2015 BITA-MABG and RA-MABG experience in STS-ACSD. Primary end points were operative mortality (OM) and deep sternal wound infections (DSWI). Risk-adjusted odds ratios [AOR (95% confidence interval)] were derived via multivariable logistic regression. Sensitivity analyses were done in patient sub-cohorts and based on institutional BITA-utilization rates ( 40%). RESULTS: Eighty-five thousand nine hundred five RA-MABG (82.5% men; 61 years) and 61 336 BITA-MABG (85.1% men; 59 years) patients were analysed; 41.6% of BITA-MABG and 27.3% of RA-MABG cases came from institutions with low MABG utilization rates ( 20% of all cases for OM and ≥40% for DSWI. CONCLUSIONS: This analysis of the STS-ACSD showed that RA-MABG is a generally safer form of multi-arterial coronary artery bypass grafting surgery. However, this advantage is mitigated at institutions with substantial BITA experience.
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