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Reduction of platelet transfusion- associated sepsis by short-term bacterial culture
1Hong Kong Red Cross Blood Transfusion Service, Queen Mary Hospital, The University of Hong Kong, China. hwliu@ha.org.hk
Background And Objectives:
There is as yet no suitable routine laboratory test for a blood transfusion service to detect bacterial contamination in platelets. This study evaluates the effectiveness and the applicability of short-term bacterial culture for such a purpose.
Materials And Methods:
Samples from 5-unit platelet pools were inoculated into an aerobic culture bottle, then monitored for 48 h at 35 degrees C in an automated monitoring and detection system.
Results:
26,210 whole-blood-derived platelet components were tested, of which 14 (0.053%) platelet units were found to be contaminated. In addition, nine of the associated red cell units and 4 fresh-frozen plasma units grew the same organisms on culture.
Conclusion:
Short-duration bacterial culture by an automated system is effective and suitable for routine screening in a regional transfusion center.