Platelet-Poor Blood in Open-Heart Surgery

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Abstract
THE thrombocytopenia seen at this institution after open-heart surgery has been shown to be unrelated to the age of the blood used for perfusion.1 We have used 48-hour-old blood, containing few viable platelets,2 , 3 for perfusion during cardiopulmonary bypass. Since the platelets in such blood are wasted, it would be desirable to remove them when fresh for use in other patients. The present report compares stored whole blood with blood from which platelets have been removed as transfusion fluids in open-heart surgery.Materials and MethodsPlatelet-poor blood (PPB) was prepared by removal of 60 to 80 per cent of the original . . .