2. Clinical Laboratory, Tokyo Metropolitan Bokutoh Hospital, Japan.
Background: Red cell concentrates are usually transfused through a transfusion filter. Iatrogenic accidents can occur in which the red blood cell concentrate is transfused through the infusion filter by mistake. Therefore, we examined the extent of red blood cell damage in red cell concentrates transfused through transfusion and infusion filters ex vivo.
Methods: We evaluated red blood cell damage using lactate dehydrogenase, free hemoglobin, and erythrocyte membrane phosphatidylserine expression in red cell concentrates transfused through transfusion and infusion filters (transfusion rate: 100mL/h). In addition, we performed hemolytic experiments using a 50% glucose solution in red cell concentrates transfused through both filters.
Results: Red cell concentrates transfused through infusion filters revealed higher lactate dehydrogenase, free hemoglobin, and phosphatidylserine expression levels than those transfused through transfusion filters. The 50% glucose solution induced hemolysis of the red cell concentrates from the infusion filters more strongly than those from the transfusion filters.
Conclusion: An iatrogenic mistake from the transfusion filter to the infusion filter might induce red blood cell damage.
Keywords: Hemolysis, phosphatidylserine, lactate dehydrogenase, free hemoglobin, transfusion filters