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[Blood conservation strategy: a current issue].

In view of the demographic evolution, the progress of quality requirements and the shortage of donors, a deficiency of blood components is to be feared in the coming years. This implies the development of a blood conservation strategy, the revision of transfusion practices and the implementation of preventive measures to limit transfusion requirements. Each service caring for patients at high transfusion risk should assess and rationalize its transfusion practices in a structured multidisciplinary way.