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Cell saver, ultrafiltration and direct transfusion: comparative study of three blood processing techniques
I Eichert1, F Isgro, A H Kiessling
1Department of Cardiac Surgery, Ludwigshafen, Germany.
Insights
Direct infusion is a cost-effective method for returning cardiopulmonary bypass circuit blood during cardiac surgery. This technique for intraoperative blood salvage did not significantly alter coagulation or increase blood loss compared to other methods.
Area of Science:
- Cardiovascular Surgery
- Anesthesiology
- Transfusion Medicine
Background:
- Intraoperative blood salvage is crucial for blood conservation in cardiac surgery.
- Evaluating different circuit blood-salvaging techniques is essential for optimizing patient outcomes.
- Comparing centrifugation, ultrafiltration, and direct infusion provides insights into their efficacy.
Purpose of the Study:
- To examine the effects of three distinct circuit blood-salvaging techniques.
- To compare centrifugation, ultrafiltration, and direct infusion in cardiac surgery.
- To assess the impact of these methods on hemoglobin, platelet count, and coagulation parameters.
Main Methods:
- A prospective, randomized study involving sixty patients undergoing elective coronary bypass graft procedures.
- Patients were randomly assigned to one of three blood-salvaging methods: centrifugation, ultrafiltration, or direct infusion.
- Analysis included intra- and postoperative blood samples and coagulation parameters.
Main Results:
- Direct infusion showed increased hemoglobin values; ultrafiltration showed higher platelet counts, with no significant differences between groups.
- Coagulation parameters (partial thromboplastin time, activated clotting time) showed similar prolongation across all groups.
- No significant differences in blood loss were observed between the three blood conservation methods; direct infusion did not cause major coagulation disturbances or increased blood loss.
Conclusions:
- Direct transfusion is an appropriate and cost-effective approach for returning cardiopulmonary bypass circuit blood in adult coronary artery bypass grafting patients.
- The direct infusion method offers a viable alternative for intraoperative blood salvage without compromising coagulation or increasing blood loss.
- Cost-effectiveness analysis supports direct infusion as a practical option for blood conservation in cardiac surgery.
Background:
Intraoperative blood salvage is an important part of blood conservation efforts in cardiac surgery. The purpose of this study is to examine the effects of three different circuit blood-salvaging techniques: centrifugation, ultrafiltration and direct infusion.
Methods:
Sixty patients undergoing elective coronary bypass graft procedures were randomly assigned in a prospective manner to one of the three blood-salvaging methods.
Results:
Intra- and postoperative blood samples demonstrated increased hemoglobin values in the direct infusion group and higher platelet count in the ultrafiltration group. There were no significant differences in these results. The analysis of coagulation parameters revealed a similar prolongation of partial thromboplastin time and activated clotting time in all groups. The amount of blood loss was not significantly different between the three blood conservation methods. The effect of direct infusion method does not result in either major disturbance of coagulation parameters or in increased blood loss.
Conclusion:
In a sample of adult patients undergoing coronary artery bypass grafting, direct transfusion is, in consideration of the cost-effective factor, an appropriate approach for returning cardiopulmonary bypass circuit blood.