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Abstract
^ical blood loss and trauma are the major indications for allogenic blood M. Transfusion risks, reduced allogenic blood supplies, higher demands i, refusal of blood transfusion because of religious beliefs, increasing costs itionable efficacy force the search for alternatives for allogenic blood 3n.
corpuscles transfusion is normally performed .to increase the 0^ carrying of circulating blood to improve tissue oxygenation and cell function. In tVho are not critically ill, the threshold for iransfLision should be a lou 111)g. <6 gm/dl in a young healthy patient), especially when the anemia is 3Cs are usually unnecessary when the Hb concentration is more than 10 tcept for patients who are considered at risk. The determination ofwhethcr iateHb concentration (from 6-10 gm/dl) require RBCs transfusion should on any ongoing indication of organ ischemia, potential or actual ongoing, the patient’s intravascular volume status, and the patient’s risk factors for itions of inadequate oxygenation. Py0i 32 mmHg, (S,0^) <50%, CM^R inexplained reduction in VOs of>10% are clear indications for blood on.
ioperative blood conservation is a global concept that includes all available ss and strategies to avoid exposing a patient lo allogenic blood on. There is no one single universal blood conservation strategy that is Ie to all patients or populations.