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Washed red blood cells are red blood cells that have had most of the plasma, platelets and white blood cells removed and replaced with saline or another type of preservation solution. [ 1 ] [ 2 ] The most common reason for using washed red blood cells in transfusion medicine is to prevent the recurrence of severe allergic transfusion reactions ...
In most countries, immunohematology and transfusion medicine specialists provide expert opinion on massive transfusions, difficult/incompatible transfusions and rational use of specialised blood product therapy like irradiated blood/leukodepleted/washed blood products. The blood donor center is the facility that collects blood components from ...
Regardless of manufacturer, there are many types of cell processors. Cell processors are red cell washing devices that collect anticoagulated shed or recovered blood, wash and separate the red blood cells (RBC) by centrifugation or filtration such as the HemoClear filter. After, the washed RBCs can be returned to the same patient by reinfusion.
The specialist Immunohematology and Transfusion Physician provides expert opinion for difficult transfusions, massive transfusions, incompatibility work up, therapeutic plasmapheresis, cellular therapy, irradiated blood therapy, leukoreduced and washed blood products, stem cell procedures, platelet rich plasma therapies, HLA and cord blood ...
Red blood cell concentrates still contain a small amount of plasma after standard processing (usually 10-15 mL). In order to reduce the risk of allergic reactions to plasma proteins, or to modify the red blood cell concentrates for patients who are sensitive to IgA or potassium ions (K +), the red blood cell concentrates can be washed.
The direct Coombs test is used to detect antibodies or complement proteins attached to the surface of red blood cells. To perform the test, a blood sample is taken and the red blood cells are washed (removing the patient's plasma and unbound antibodies from the red blood cells) and then incubated with anti-human globulin ("Coombs reagent").
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Blood product contamination, while rare, is still more common than actual infection. The reason platelets are more often contaminated than other blood products is that they are stored at room temperature for short periods of time. Contamination is also more common with longer duration of storage, especially if that means more than 5 days.