Inventory management in Sydney Public Hospital Blood Banks

Abstract

Monitoring the outdating of donated units is one way of assessing the efficiency of blood usage. Inventory management in public hospital blood banks in Sydney was reviewed with the aim of determining factors which lead to the outdating of donor blood. Factors which correlated significantly with increased outdating in hospitals included absence of an effective hospital transfusion committee; high ratio of average inventory: units transfused; fewer than three routine deliveries from the BTS per day; increased time taken for delivery of urgent products; CT values greater than 2:1, premature performance of the crossmatch and prolonged crossmatching holding time. Hospitals were informed of the initial audit results and were alerted to the factors contributing to excessive outdating. They received monthly feedback of individual outdating results compared with overall outdating. After 6 months there was a significant reduction in overall outdating from 5.0 to 0.9% (P < 0.05), which has been maintained for a further 12 months. Changes in inventory management associated with an improvement in overall outdating included: changes in crossmatching practice which increase the effective shelf-life of blood, knowledge of when blood was due to outdate and effective stock rotation.

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