Characteristics of white cell-reduced red cells stored in tri-(2-ethylhexyl)trimellitate plastic

R J DaveyS Holme


Standard blood storage containers contain extractable plasticizers that accumulate in blood during storage and are an unintended transfusion product. However, extractable plasticizers have a protective effect on the red cell membrane and improve red cell storage variables. Prestorage white cell reduction also improves selected red cell storage variables. The study evaluated whether the beneficial effect of prestorage white cell reduction would offset the negative effect of the absence of extractable plasticizer in red cells stored in AS-3 for 42 days at 4 degrees C. Filtered red cells stored in polyvinylchloride containers with the nonextracting plasticizer, tri-(2-ethylhexyl)trimellitate (TEHTM), were compared to unfiltered red cells stored in polyvinylchloride containers with the extractable plasticizer di-(2-ethylhexyl)phthalate (DEHP). Poststorage supernatant potassium and red cell osmotic fragility were significantly higher in white cell-reduced TEHTM units than in unfiltered DEHP units. The mean 24-hour recovery of the filtered TEHTM red cells was significantly lower than that of the unfiltered DEHP red cells (69.1 +/- 7.4% vs. 77.1 +/- 5.1%, p < 0.05, n = 8). These data demonstrate that white cell reduction before 42-day...Continue Reading


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