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Ann Thorac Surg 1993;56:893-898
© 1993 The Society of Thoracic Surgeons
a Department of Cardiopulmonary Surgery, Catharina Hospital, Groningen, the Netherlands
b Department of Cardiopulmonary Surgery, Research Division, University Hospital, Groningen, the Netherlands
Accepted for publication December 2, 1992.
* Address reprint requests to Dr Schönberger, Department of Cardiopulmonary Surgery, Catharina Hospital, Michelangelolaan 2, 5602 ZA, PO Box 1350, Eindhoven, the Netherlands
The merits of reinfusing prebypass-removed autologous blood (intraoperative predonation) to salvage blood and improve postoperative hemostasis are still debated, specifically for patients at a higher risk for bleeding. To evaluate the effect of intraoperative predonation on the platelet count, blood hemoglobin content, and blood saving postoperatively, we retrospectively studied 100 matching patients. All patients underwent internal mammary artery bypass surgery resulting in a considerable blood loss postoperatively. Intraoperative predonation (800 ml), reinfusion of the residual volume of the extracorporeal circuit, autotransfusion of shed blood, and acceptance of normovolemic anemia postoperatively was the approach adopted in 50 patients (group 1). A similar blood salvage program, excluding intraoperative predonation, was carried out in the other 50 patients (group 2), and these served as the control group. The platelet counts and blood hemoglobin content were significantly higher postoperatively (p < 0.01) in the predonated patients than in the control patients. However, the net blood loss, the amount of retransfused shed blood, and the blood requirements postoperatively were significantly less (p < 0.01) in the predonated patients than in the control patients, whereas 65% of the predonated patients versus 10% of the control patients did not need any donor blood products. In conclusion, predonation reduces the postoperative blood loss and thereby importantly ameliorates the blood-saving effect of a blood salvage program after IMA procedures.
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