Transfusion
The blood transfusions began some time ago, but some of them were successful, and the other failed and the person who passed the blood died. Many studies were carried out to conclude that the blood is not the same in all human beings. There are several types of blood transfusions. The other.
When two incompatible, or inappropriate, groups are transferred, some toxic chemical reactions occur.
Blood types and types
We know that blood is made up of red blood cells, white blood cells, platelets, and plasma. It is present in all people, but the difference lies in the so-called antibody generators, a molecular group of proteins found on the surface of red blood cells in some people. And B, and are absent in others, in addition to the difference of antibodies in plasma blood.
Accordingly, blood groups are divided into:
- Blood type A is where antibodies are on the surface of blood cells, while antibodies B are in blood plasma.
- Blood type B where antibodies B are on the surfaces of blood cells, while antibodies A are in blood plasma.
- Blood type AB where antibodies A and antibodies B on the surfaces of blood cells, while free of plasma blood.
- Blood type O where antibodies A and antibodies B in the blood plasma, while the surfaces of blood cells are free of them.
Accordingly:
- A can give AB and O, in addition to itself, of course.
- Type B can give AB and O, in addition to itself, of course.
- The AB family only grants itself.
- The O species is given to everyone including itself.
Types of blood cells according to the Raysy factor
There are many genes that determine the type of blood, but the most important is the factor Rh (Rh), which is an antibody found in the red blood cells in some people and in this case, they call (+ Rh), but in his absence called (-Rh) Accordingly, blood transfusions may be obtained from those who do not have the status of the Rizizian factor (Rh).
How to transfer blood
- First, a sample of the blood is taken from the person to be transferred to him to know the type of blood type as previously explained, and sent to the laboratory.
- A suitable vein is sought to place the blood transfusion needle that will connect to a sac containing a unit of blood, to feed the vein with blood.
- After confirming the blood type, and matching it to the appropriate type of blood units that have been donated in advance, the required blood unit is brought.
- The blood unit is placed in lukewarm water or on the patient’s chest to warm it.
- Carefully move the needle so that no air enters the blood, then begin the process of blood transfusion, which takes an hour and a half in emergency cases, up to four hours in normal cases.