Transfusion therapy in the patient undergoing hematopoietic stem cell transplantation.

Optimal transfusion therapy for the patient undergoing stem cell transplantation will vary, depending on a variety of independent factors. These factors include the source of hematopoietic progenitor cells, The relationship between donor and recipient, and the timing of the transfusion relative to the transplant. Stem cell transplantation also changes the traditional views of blood groups: a patient may have more than one of the traditional blood groups at different stages of transplantation.