What are typical criteria guiding the choice between OPCAB and on-pump CABG?

• A. Hemodynamic stability, extent of multivessel disease, surgeon experience, equipment availability, and aim for complete revascularization balanced against CPB risks.
• B. Choice is based solely on surgeon preference.
• C. OPCAB is preferred in all multivessel disease.
• D. On-pump CABG is never used.

Answer: (A)

Choosing between beating-heart CABG (OPCAB) and on-pump CABG hinges on balancing patient stability, the extent of artery disease, and the risks and resources involved, with the goal of achieving complete revascularization safely. If a patient maintains stable blood pressure and heart function and the disease is limited to a few vessels, beating-heart grafting can avoid the inflammatory and other systemic effects of cardiopulmonary bypass, potentially reducing certain complications. But for extensive multivessel disease or challenging coronary anatomy, maintaining precise, complete grafts on a beating heart can be technically demanding, and using CPB to arrest the heart provides a controlled environment that often makes it easier to achieve complete revascularization across all targets.

Surgeon experience matters because OPCAB requires specialized stabilization techniques and careful exposure; outcomes improve when the team is proficient with beating-heart grafting. Equipment availability also plays a role, since OPCAB relies on stabilization devices, imaging, and sometimes intraoperative monitoring that may not be present in all settings; when such resources are limited, on-pump CABG becomes the more practical option. Finally, the inherent risks of CPB—systemic inflammatory response, coagulopathy, and potential organ dysfunction—are weighed against the benefits of a controlled, arresting environment, especially in high-risk patients or those with complex anatomy, where bypass support can make the difference between a complete and a feasible revascularization.

In short, the decision is about optimizing complete revascularization while minimizing perioperative risk, taking into account hemodynamic stability, disease complexity, surgeon experience, available equipment, and CPB-related risks.