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Updated: Apr 14, 2026
Author Spotlight: Enhancing Coronary Artery Revascularization
Published on: September 15, 2023
Comparative Effectiveness of Hybrid Coronary Revascularization vs Coronary Artery Bypass Grafting
Ralf E Harskamp1, Thomas A Vassiliades2, Rajendra H Mehta3
1Duke Clinical Research Institute, Durham, NC; Academic Medical Center, University of Amsterdam, The Netherlands.
Insights
Hybrid coronary revascularization (HCR) offers a safe alternative to conventional coronary artery bypass grafting (CABG), demonstrating comparable long-term outcomes with faster patient recovery. This minimally invasive approach shows promise for various patient risk profiles.
Area of Science:
- Cardiovascular Surgery
- Minimally Invasive Procedures
- Interventional Cardiology
Background:
- Hybrid coronary revascularization (HCR) integrates minimally invasive left internal mammary artery bypass with percutaneous coronary intervention.
- Comparative studies on HCR versus conventional coronary artery bypass grafting (CABG) are limited.
- Understanding HCR's safety and effectiveness is crucial for treatment selection in multivessel and left main coronary artery disease.
Purpose of the Study:
- To compare the safety and effectiveness of HCR against conventional CABG.
- To evaluate short- and long-term clinical outcomes following HCR versus CABG.
- To assess HCR's performance across different patient subgroups based on coronary anatomy and predicted risk.
Main Methods:
- A propensity-score matched cohort study included patients with multivessel or left main disease undergoing HCR or CABG.
- Patients were matched in a 1:3 ratio (HCR:CABG).
- Conditional logistic regression and Cox regression analyses were used to compare outcomes.
Main Results:
- No significant difference in 30-day composite outcomes (death, MI, stroke) between HCR and CABG (3.3% vs. 3.1%).
- HCR was associated with significantly lower in-hospital major morbidity, reduced blood transfusion rates, less chest tube drainage, and shorter hospital stays.
- Long-term (3-year) mortality rates were similar between HCR and CABG groups (8.8% vs. 10.2%).
Conclusions:
- Hybrid coronary revascularization (HCR) demonstrates safety and faster recovery compared to conventional CABG.
- Outcomes for HCR are comparable to CABG, irrespective of patient's coronary anatomy or predicted procedural risk.
- HCR represents a viable alternative for selected patients requiring coronary revascularization.
Background:
Hybrid coronary revascularization (HCR) combines minimally invasive left internal mammary artery to left anterior descending bypass with percutaneous coronary intervention of non-left anterior descending vessels. Its safety and effectiveness compared with conventional CABG have been under studied.
Study Design:
Patients with multivessel disease and/or left main disease who underwent HCR at a US academic center between October 2003 and September 2013 were included. These patients were matched 1:3 to patients treated with CABG using a propensity-score matching algorithm. Conditional logistic regression and Cox regression analyses stratified on matched pairs were performed to evaluate the adjusted association between HCR and short- and long-term outcomes.
Results:
The 30-day composite of death, MI, or stroke after HCR and CABG was 3.3% and 3.1% (odds ratio = 1.07; 95% CI, 0.52-2.21; p = 0.85) in the matched cohort of 1,224 patients (HCR, n =306; CABG, n = 918). Hybrid coronary revascularization was associated with lower rates of in-hospital major morbidity (8.5% vs 15.5%; p = 0.005), lower blood transfusion use (21.6% vs 46.6%; p < 0.001), lower chest tube drainage (690 mL; 25th to 75th percentile: 485 to 1,050 mL vs 920 mL, 25th to 75th percentile: 710 to 1,230 mL; p < 0.001), and shorter postoperative length of stay (<5-day stay: 52.6% vs 38.1%; p = 0.001). During a 3-year follow-up period, mortality was similar after HCR and CABG (8.8% vs 10.2%; hazard ratio = 0.91; 95% CI, 0.55-1.52; p = 0.72). Subgroup analyses in patients stratified by 2-vessel, 3-vessel, left main disease, and by Society of Thoracic Surgeons risk scores rendered similar results.
Conclusions:
The use of HCR appeared to be safe, with faster recovery and similar outcomes when compared with conventional CABG. These findings were consistent irrespective of anatomic or predicted procedural risk.
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