Outcomes in Multivessel Coronary Disease Stratified by Society for Thoracic Surgery Risk

Abstract Background Surgical risk stratified outcomes following contemporary revascularization strategies have not been well described. We report these outcomes in patients undergoing Percutaneous Coronary Intervention (PCI) or Coronary Artery Bypass Grafting (CABG) for multivessel coronary disease. Methods 5836 patients with multivessel disease who underwent CABG (4420) or PCI (1416) were included in this retrospective observational analysis. Data was stratified based on Society of Thoracic Surgeons risk score. Score Results In the CABG population, 3863 (87.3%) were low surgical risk and 557 (12.6%) were intermediate-high risk. The 5-year mortality for the low risk cohort was 10.9% (95% CI 9.83-12.05) and for the intermediate-high risk cohort, it was 40.1% (95% CI 35.76-44.54). Among those undergoing PCI, 1163 (82.1%) were low risk while 249 (17.6%) were intermediate-high risk. The 5-year mortality for the low risk cohort was 21.6% (95% CI 19.10-24.26) and for the intermediate-high risk cohort, it was 61.8% (95% CI 54.72-68.70). Conclusions This study reports outcomes stratified by surgical risk after PCI or CABG in patients with multivessel coronary disease. This data can help guide revascularization strategy choice for individual patients.