Washed red blood cells are indicated to which of the following?

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Multiple Choice

Washed red blood cells are indicated to which of the following?

Washed red blood cells are prepared by removing most of the donor plasma, leaving mainly red cells in saline. This lowers the amount of plasma proteins and any antibodies present in the donor plasma that could trigger reactions in the recipient. The situation where this is most important is in patients with IgA deficiency who have anti-IgA antibodies and have experienced anaphylactic or severe allergic transfusion reactions. In those cases, donor IgA in the plasma can provoke a life-threatening reaction, so washing the unit reduces IgA content and the risk of such reactions. Washed units are not meant to remove bacteria from the blood product, and they do not prevent alloimmunization by RBC antigens—alloimmunization is driven by the recipient’s immune response to RBC surface antigens, not by donor plasma proteins. Washing also does not increase the transfused blood’s volume; it typically reduces plasma volume, though the goal is the safer product for at-risk patients.

Washed red blood cells are prepared by removing most of the donor plasma, leaving mainly red cells in saline. This lowers the amount of plasma proteins and any antibodies present in the donor plasma that could trigger reactions in the recipient. The situation where this is most important is in patients with IgA deficiency who have anti-IgA antibodies and have experienced anaphylactic or severe allergic transfusion reactions. In those cases, donor IgA in the plasma can provoke a life-threatening reaction, so washing the unit reduces IgA content and the risk of such reactions.

Washed units are not meant to remove bacteria from the blood product, and they do not prevent alloimmunization by RBC antigens—alloimmunization is driven by the recipient’s immune response to RBC surface antigens, not by donor plasma proteins. Washing also does not increase the transfused blood’s volume; it typically reduces plasma volume, though the goal is the safer product for at-risk patients.

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