Yes! Now with technical advancements, blood can be separated into its components and each can be individually stored. For example, plasma can be separated from whole blood and stored up to one year in frozen state at -80 0C temperature or below. This is called Fresh Frozen Plasma. Similarly there are other components like Platelet Rich Plasma; Platelet Concentrate (this life saving measure can be stored upto 5 days now at 22- 24 0C in a platelet incubator and agitator); Cryoprecipitate (which is very useful in treating bleeding disorders due to the deficiency of factor VIII and IX); Factor VIII and IX; Albumin, Globulin and many others. In most progressive blood banks more than 85 % of the blood collected is converted into components and stored. This is because many patients do not require whole blood.
For example, a patient whose haemoglobin is low and is therefore anaemic, may just require Packed Cells i.e. only red cells; a patient with burns may need more of plasma than cells; a patient with haemophilia may require only Factor VIII.
Now with the advent of Cell-separators we can directly draw a particular component from the donor, while rest of the blood constituents go back to the donor.
There are many situations in which patients need blood to stay alive:
The following symptoms may occur after only a few ml. of blood have been given:
There are three types of blood donors: -
Yes, if the donor has suffered from any of the under-mentioned diseases: -
Fever: He should not have suffered from fever for the past 15 days.
Jaundice: A donor should not have his blood tested positive for AUSTRALIA ANTIGEN.
Blood transmitted diseases: Like Syphilis, Malaria, Filaria etc. debar a donor from donating blood till he is treated and is free from them.
Drugs: If a donor is taking drugs like Aspirin, anti-hypertensive, anti-diabetics, hormones, corticosteroids etc., he is unfit to donate blood.
AIDS: No person having HIV positive can be allowed to donate blood.