The mortality rate and neurological sequelae from hemolytic disease of the newborn have been vastly reduced by the use of the exchange transfusion.1,2 Yet this lifesaving procedure itself is associated with severe complications and can cause death.3-5 Stored citrated blood has been implicated as the cause of many of these untoward reactions. These include convulsions, retching, clinical signs of shock,6 heart block,7 decreased cardiac stroke volume,8 increased venous pressure,3 cardiac irregularities,3 generalized irritability,9 and even death. [3][4][5]9 Many of these deleterious effects of stored citrated blood have been circumvented by use of fresh heparinized whole blood. Previous reports,3,10-12 although limited in number, do indicate the general lack of toxicity of fresh heparinized blood. It is the purpose of this paper to detail the clinical experience in 152 exchange transfusions conducted with heparinized fresh blood. These exchanges were performed at the University of Minnesota and Minneapolis General Hospitals over the past 14 years from 1945-
1959.A study of the coagulation mechanism associated with the use of heparinized blood is included to indicate the ease of control of the heparin effects by protamine sulfate.
MethodsThe donor blood is collected in a siliconized system by gravity with minimal foaming and agitation of the bottle. The anticoagulant used is 20 mg. of heparin (Upjohn) per 500 cc. of whole blood. The blood is normally used immediately or within several hours thereafter. The blood is not refrigerated.Exchange transfusions were completed ac¬ cording to accepted standards at the date of the procedure. At present, the techniques used are similar to that described by Wheeler and Ambuel13 for the care and management of the infant. In all instances except five, the exchange transfusions were done through the umbilical vein.