Redo coronary artery bypass grafting on the beating heart and transfusion needs

Area of Science:

• Cardiovascular Surgery
• Anesthesiology
• Transfusion Medicine

Background:

• Reoperative coronary artery bypass grafting (CABG) presents challenges in perioperative management, particularly concerning significant bleeding and transfusion requirements.
• Off pump techniques may offer advantages by minimizing blood contact with foreign surfaces, potentially reducing transfusion needs.

Purpose of the Study:

• To evaluate the role of off pump technique in reducing blood product transfusion requirements in patients undergoing reoperative coronary artery bypass grafting.
• Investigate the impact of off pump versus cardiopulmonary bypass on transfusion rates in redo CABG surgery.

Main Methods:

• A single-center case-control study involving 132 consecutive patients undergoing reoperative CABG.
• Patients were divided into two groups: off pump (OP group, 41 patients) and cardiopulmonary bypass (CPB group, 91 patients).
• Univariate and multivariate logistic regression analyses were performed to identify predictors of transfusion.

Main Results:

• The frequency of patients transfused with blood products was significantly higher in the CPB group (47.3%) compared to the OP group (19.5%) (P=0.004).
• The mean number of grafts per patient differed between groups (OP: 1.4±0.7, CPB: 2.5±1.0).
• Cardiopulmonary bypass use (OR: 4.1) and female gender (OR: 7.0) were independent predictors of transfusion.

Conclusions:

• Off pump coronary artery bypass grafting is associated with a reduced need for blood product transfusions in reoperative cardiac surgery.
• The findings suggest that the off pump technique is a valuable strategy for minimizing transfusions in redo CABG procedures.