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Effectiveness of Platelet Transfusion in Leukemia and Aplastic Anemia

Effectiveness of Platelet Transfusion in Leukemia and Aplastic Anemia Hemorrhage resulting from thrombocytopenia in patients with acute leukemia and aplastic anemia can be controlled by platelet transfusions. Severe gross hemorrhage was rarely observed when platelet counts were higher than 20,000 per cu. mm. Transfusion of 1 × 1011 platelets produced an average increment of 12–14,000 platelets per cu. mm./square meter (m2) of body surface in acute leukemia. One unit of platelet rich plasma (PRP) contains an average of 1 × 1011 platelets and 4 PRP/m2 twice weekly will maintain the platelets above 20,000 per cu. mm. most of the time. When very large doses of platelets are required in a small volume then platelet concentrates (PC), prepared by centrifuging PRP and removing most of the plasma, are used. PC are 80 to 90 per cent as effective as PRP in elevating the platelet count if prepared from plasma with a pH of 6.8 or less, achieved by the addition of citric acid. The major hazard of platelet transfusion is posttransfusion hepatitis. This can be minimized by the use of plasmapheresis thus using the same donors repeatedly. In the presence of anemia platelets can be given effectively in fresh whole blood transfusions until the patient's hematocrit is raised. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Transfusion Wiley

Effectiveness of Platelet Transfusion in Leukemia and Aplastic Anemia

Freireich, Emil J.
Transfusion , Volume 6 (1) – Jan 2, 1966
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References (16)

Publisher
Wiley
Copyright
1966 AABB
ISSN
0041-1132
eISSN
1537-2995
DOI
10.1111/j.1537-2995.1966.tb04691.x
Publisher site
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Abstract

Hemorrhage resulting from thrombocytopenia in patients with acute leukemia and aplastic anemia can be controlled by platelet transfusions. Severe gross hemorrhage was rarely observed when platelet counts were higher than 20,000 per cu. mm. Transfusion of 1 × 1011 platelets produced an average increment of 12–14,000 platelets per cu. mm./square meter (m2) of body surface in acute leukemia. One unit of platelet rich plasma (PRP) contains an average of 1 × 1011 platelets and 4 PRP/m2 twice weekly will maintain the platelets above 20,000 per cu. mm. most of the time. When very large doses of platelets are required in a small volume then platelet concentrates (PC), prepared by centrifuging PRP and removing most of the plasma, are used. PC are 80 to 90 per cent as effective as PRP in elevating the platelet count if prepared from plasma with a pH of 6.8 or less, achieved by the addition of citric acid. The major hazard of platelet transfusion is posttransfusion hepatitis. This can be minimized by the use of plasmapheresis thus using the same donors repeatedly. In the presence of anemia platelets can be given effectively in fresh whole blood transfusions until the patient's hematocrit is raised.

Journal

Transfusion – Wiley

Published: Jan 2, 1966

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