Determination of the rate of reduction in platelet counts in recipients of hematopoietic stem and progenitor cell transplant: clinical implications for platelet transfusion therapy

Transfusion
M L del Rosario, K I Kao

Abstract

To investigate how a delay between pretransfusion platelet count measurement and actual platelet transfusion affects the assessment of platelet transfusion responses, the rate of reduction in platelet counts was determined in 30 patients with relatively uncomplicated thrombocytopenia. Fifteen adult and 15 pediatric patients admitted for hematopoietic stem and progenitor cell transplantation were studied. Platelet counts before and after myeloablative conditioning and after prophylactic platelet transfusions were determined and studied as a function of time. The rates of reduction in platelet counts were determined by linear regression analysis. Platelet counts were reduced at linear rates after myeloablative conditioning or prophylactic platelet transfusion in all 30 patients. The average rates of reduction in platelet counts after myeloablation were 1261 +/- 583 and 1070 +/- 492 platelets per microL per hour (mean +/- SD) for adult and pediatric patients, respectively. The average rate of reduction after platelet transfusions during the thrombocytopenic phase was 740 +/- 280 and 820 +/- 288 platelets per microL per hour (mean +/- SD) for adult and pediatric patients, respectively. The rates of reduction in platelet counts betw...Continue Reading

Citations

Mar 2, 2005·Transfusion and Apheresis Science : Official Journal of the World Apheresis Association : Official Journal of the European Society for Haemapheresis·Lucille WoodPeter Jacobs

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