A new method to study the efficiency of third generation blood filters.
In order to study the efficiency of third generation blood filters we have devised a new method using 3 microns pore size polycarbonate filter membranes and a filtration chamber to trap leucocytes passing through the blood filter. The method has enabled us to make two important observations: (1) The filters function very efficiently at the start but the efficiency diminishes progressively with time. (2) When the blood flow through the filter is retarded, due to defective priming and/or filter malfunction, the filters fail even at the outset of the transfusion.
Sivakumaran
M
M
Department of Haematology, Leicester Royal Infirmary.
Norfolk
D R
DR
Major
K E
KE
Revill
J A
JA
Hutchinson
R M
RM
Wood
J K
JK
D004868:Equipment Failure; D006440:Hemofiltration; D006801:Humans; D007958:Leukocyte Count; D008851:Micropore Filters; D011076:Polycarboxylate Cement
D011076:Polycarboxylate Cement; C005506:polycarbonate