A few labile substances of Fresh Blood are :-
(D) Other labile factors:- Can be provided by given frozen or dried plasma.
3-Plasma:- It may be used as :-
(2) Dried Plasma
(A) Platelets:- These stick to the rubber and glass surface and also soon die or become non-functional. If platelets are needed, fresh blood is necessary.
(B) W.B.C:- These die fairly rapidly. On occasions where the patient is suffering from several leucopenia with Infection, a transfusion of fresh blood provides viable leukocytes which help to fight the infection but which do not raise the W.B.C. count.
(C) Factor-VIII:- Ant hemophilic globulin patients with hemophilia should be transfused with fresh blood if they need transfusion to help stop bieeding, since AHG disappears rapidly from stared blood.
(D) Other labile factors:- Can be provided by given frozen or dried plasma.
2-Packed Cells:- Sediment Cells in chronic anemia one may want to transfuse just the packed cells. This can be prepared by aspirating the plasma into a separate sterile bottle, leaving the cells in original bottle. The packed Cells should be transfused within 4 hours.
3-Plasma:- It may be used as :-
(i) Liquid Plasma:- It should contain 5% dextrose to prevent precipitation of fibrin at room temperature.
Liquid plasma may be kept at room temp. For 3 year. Hepatitis virus is attenuated or destroyed in plasma that has remained at RT for 6 months
(1) Frozen Plasma(2) Dried Plasma