donor gives 420 cm3 of blood from a vein in the arm. The blood is
led into a sterilized bottle containing sodium citrate which
The Blood is then
stored at 5░C for 10 days, or longer if glucose is added. Before
blood is transfused, even though both the blood groups of both the
donor and the recipient are known, it is
carefully tested against each other to make sure of a good
match. Then the donor's blood is fed into one of the patient's arm veins at the
correct rate and temperature. In a few hours, the donor will have
made up his or her blood to the normal volume and in a week or two
the red cells will have been replaced.
prospective donor is required to complete and sign a
before he/she is allowed donate his/her blood.
ęCopyright TQ Team 25896, 1999. The Circulatory System- Online Learning.