[Behavior of the oxygen half-saturation value and HbF content of blood of newborn infants during blood exchange transfusion].

An evaluation of the HbF-content and the oxygen-half-saturation value took place in 15 newborn infants before, during and after an exchange transfusion. The initial HbF content decreased to 25% after the exchange transfusion with ACF-blood. The p50-value did not increase, as expected, but decreased dependent on the volume of the exchanged blood, caused by a quick loss of 2.3.-DPG in the ACD-blood within the first two days of storage. A normalization could be demonstrated 24 hours after the transfusion.