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Updated: Jun 12, 2026

Surgical Porcine Model of Chronic Myocardial Ischemia Treated by Exosome-laden Collagen Patch and Off-pump Coronary Artery Bypass Graft
Published on: September 15, 2023
[Myocardial revascularization without extracorporeal circulation in patients with ischemic impaired left ventricular
Luther Keita1, Romuald Lango, Jan Rogowski
1Klinika Kardiochirurgii Instytutu Kardiologii, AM, Gdańsk.
Insights
Off-pump myocardial revascularization offers a safe alternative for patients with severe left ventricular dysfunction. This approach provides comparable short-term results to conventional bypass surgery in selected cases.
Area of Science:
- Cardiovascular Surgery
- Cardiac Anesthesia
- Cardiothoracic Surgery
Background:
- Severe left ventricular dysfunction presents significant challenges for coronary bypass graft procedures.
- Maintaining adequate myocardial perfusion during surgery is critical in these high-risk patients.
Purpose of the Study:
- To compare the efficacy and safety of off-pump myocardial revascularization versus conventional on-pump coronary artery bypass grafting.
- To evaluate outcomes in patients with ejection fraction below 35%.
Main Methods:
- Retrospective analysis of patients undergoing coronary bypass graft procedures.
- Comparison of off-pump myocardial revascularization (OPCAB) with conventional on-pump coronary artery bypass grafting (CABG).
- Patient selection criteria included ejection fraction < 35%.
Main Results:
- Off-pump bypass procedures were found to be a suitable and safe alternative in selected patients.
- Complete revascularization was achievable with the off-pump technique.
- Short-term results were comparable between off-pump and conventional on-pump surgery.
Conclusions:
- Off-pump myocardial revascularization is a viable option for patients with severe left ventricular dysfunction and low ejection fraction.
- This technique allows for complete revascularization with comparable short-term outcomes to traditional on-pump surgery.
- Careful patient selection is key to successful off-pump coronary artery bypass grafting in this cohort.
Abstract:
Coronary bypass graft procedures still remain a surgical challenge in patients with severe left ventricular dysfunction. The study was designed to compare off pump myocardial revascularization with conventional bypass procedures in patients with ejection fraction below 35%. Our results suggest that in selected patients off pump bypass procedure, may be used as a suitable and safe alternative to conventionalon pump coronary surgery, permitting complete revascularization with comparable short-term results.
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