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Updated: Dec 5, 2025

Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
Published on: March 27, 2018
Redo coronary artery bypass grafting
Faisal G Bakaeen1, Zade Akras1, Lars G Svensson1
1Department of Thoracic and Cardiovascular Surgery, Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Avenue/Desk J4-1, Cleveland, OH 44195 USA.
Insights
Redo coronary artery bypass grafting (CABG) is complex, with decreasing frequency but higher risks. Surgical experience and careful planning are crucial for optimal outcomes in these challenging cardiac surgery reoperations.
Area of Science:
- Cardiac Surgery
- Cardiovascular Research
- Surgical Outcomes
Background:
- Redo coronary artery bypass grafting (CABG) presents significant technical challenges due to advanced coronary disease and patient comorbidities.
- Patients undergoing redo CABG are typically older and have more severe health conditions compared to those receiving primary CABG.
Purpose of the Study:
- To review the epidemiology, surgical techniques, and outcomes of redo CABG.
- To understand the trends and risk factors associated with repeat CABG procedures.
Main Methods:
- A comprehensive literature review was conducted.
- Data focused on the epidemiology, operative techniques, and outcomes of redo CABG.
Main Results:
- The incidence of redo CABG has declined, representing 2% of all CABG procedures in recent years.
- Associated risks include diabetes and renal dialysis, with perioperative mortality potentially tripling compared to primary CABG.
- Outcomes are improved with meticulous preoperative planning, precise surgical technique, and surgeon experience.
Conclusions:
- Redo CABG is a complex cardiac surgery procedure requiring specialized expertise.
- Surgical experience and well-defined perioperative strategies are essential for successful redo CABG outcomes.
Purpose:
Redo coronary artery bypass grafting (CABG) can be one of the most technically challenging operations in cardiac surgery. The coronary disease is more advanced, and the coronary targets may be suboptimal. In addition, the patients are typically older and sicker compared to those undergoing primary CABG.
Methods:
A literature review focused on the epidemiology, operative techniques, and outcomes associated with redo CABG.
Results:
The frequency of redo CABG relative to total CABG procedures has been decreasing over time. From 2000 to 2009, redo CABG decreased from 6.0 to 3.4% of all CABG procedures reported to the STS Adult Cardiac Surgery Database (STS ACSD) and currently stands at 2%. Risks associated with reoperations include diabetes and renal dialysis. Perioperative mortality for redo CABG is reported to be as high as three times that of primary CABG, but this risk is reduced with experience. Careful preoperative planning including quality imaging and precise surgical technique coupled with meticulous myocardial protection contributes to good outcomes. Experience is important in optimizing outcomes.
Conclusions:
Redo CABG is a complicated operation and surgical experience, and appropriate perioperative strategies are essential for achieving optimal outcomes.

