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Hard-shell cardiotomy reservoir for reinfusion of shed mediastinal blood
1Regional Adult Cardiothoracic Unit, Broadgreen Hospital, Liverpool, England.
Insights
Reinfusing shed mediastinal blood in cardiac surgery patients significantly reduced homologous blood use when blood loss exceeded 500 mL. This finding highlights a key strategy for optimizing blood management in complex procedures.
Area of Science:
- Cardiovascular Surgery
- Transfusion Medicine
- Anesthesiology
Background:
- Managing blood loss during cardiac surgery is critical.
- Conventional mediastinal drainage is standard practice.
- Alternative methods for blood management are being explored.
Purpose of the Study:
- To compare homologous blood consumption between conventional mediastinal drainage and reinfusion of shed mediastinal blood.
- To evaluate the efficacy of shed mediastinal blood reinfusion in reducing allogeneic blood transfusions.
- To identify patient subgroups that benefit most from this intervention.
Main Methods:
- Prospective, randomized, controlled trial.
- 100 patients undergoing elective coronary artery or valvular operations.
- Comparison of conventional drainage (Group 1) vs. reinfusion of shed mediastinal blood (Group 2) for up to 18 hours postoperatively.
Main Results:
- No significant difference in overall average mediastinal blood loss or homologous blood consumption between groups.
- Statistically significant reduction in homologous blood requirements in Group 2 when mediastinal blood loss exceeded 500 mL.
- Greatest reduction in homologous blood use observed in patients with the highest mediastinal blood losses.
Conclusions:
- Reinfusion of shed mediastinal blood can effectively reduce homologous blood requirements in cardiac surgery patients with substantial blood loss.
- This technique offers a valuable strategy for blood conservation in specific patient populations.
- Further research may refine protocols for optimal application of shed mediastinal blood reinfusion.
Abstract:
We conducted a prospective, randomized, controlled trial comparing homologous blood consumption between groups of patients receiving conventional mediastinal drainage (group 1) or reinfusion of shed mediastinal blood (group 2) using hard-shell cardiotomy reservoir. One hundred consecutive patients who had elective coronary artery or valvular operations were studied. The two groups were comparable with regard to age, sex, weight, preoperative and postoperative hemoglobin levels, and surgical procedure. Group 2 patients had their shed mediastinal blood reinfused for up to 18 hours postoperatively; otherwise, the two groups were treated identically. For groups 1 and 2, average mediastinal blood losses were 705 +/- 522 and 822 +/- 445 mL and homologous blood consumption was 3.83 +/- 2.58 and 3.15 +/- 2.05 U, respectively (neither measure was significantly different). However, if blood losses exceeded 500 mL, there was a statistically significant reduction in homologous blood requirements in group 2 as compared with matched controls in group 1. This difference was most significant in patients with the greatest mediastinal losses.