Influence of the red blood cell preparation method on the efficacy of a leukocyte reduction filter.
The performance of a leukocyte reduction bedside filter with different types of RBC concentrates was analyzed. Three types of RBCs were prepared: buffycoat-depleted RBCs suspended in saline-adenine-glucose-mannitol (SAGM)-additive solution (BC-RBCs; n = 20), RBCs suspended in SAGM-additive solution without buffy coat removal (SAGM-RBCs; n = 20), and RBCs drawn in CPDA-I conservative solution and processed for component preparation by the platelet-rich plasma method (CPDA-RBCs; n = 20). The units were filtered within 8 h of collection. One filter was used for every 2 units. High numbers of residual WBCs were found even in the units filtered first. Filtration of CPDA-RBCs resulted in a higher residual WBC content than SAGM-RBCs or BC-RBCs (p = 0.0032 and p = 0.0002, respectively). The filter performance strikingly decreased when the WBC load per filter exceeded 4 x 10(9) or the platelet load was less than 100 x 10(9). We conclude that filter performance varies with the WBC and platelet content of the RBC concentrates. Under the experimental conditions assayed in this study CPDA-RBCs are the least appropriate ones to be used for bedside leukocyte reduction.
Alcorta
I
I
Service of Hemotherapy and Hemostasis, Hospital Clínico, Barcelona, Spain.
Pereira
A
A
Sanz
C
C
Terol
M J
MJ
Ordinas
A
A
D001803:Blood Transfusion / Q000379:methods*; D004912:Erythrocytes; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D007937:Leukapheresis / Q000295:instrumentation / Q000379:methods*