What is a blood transfusion? Detailed answer

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What is a blood transfusion? Detailed answer

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What is a blood transfusion?

The need for blood can arise for many reasons: a soldier was injured, an accident occurred with a worker at a factory, a person is dying due to internal bleeding, a weakened patient needs a serious operation.

Blood is needed to restore the lost resistance of the body or to strengthen it in advance. A liter or two of fresh blood transfused into his veins often means a new life for the patient!

The idea of a blood transfusion is not new. As early as 1654, the Italian physician Francesco Folli tried to transfuse from one animal to another. Later, attempts were made to transfuse blood from animals to humans, but the result was negative.

Today we know that animals of one species do not accept blood from others. That is, in fact, it acts as a poison and causes death. During the First World War, great progress was made in blood transfusion. It has been found that blood from some people cannot be transfused to others without negative consequences.

Since blood from a donor with one blood type cannot always be successfully transfused into a person with another, it is now common practice to determine the blood type in advance. In addition, hospitals have "blood banks" in which blood is stored at low temperatures, ready for immediate use. These banks act like money banks, receiving "deposits" of blood and dispensing blood instead of money. This means that in the event of a need for blood of any type, the bank has a certain reserve.

Today, blood banks are a repository not only for blood, but also for plasma. The liquid, or plasma, part of the blood is separated from the blood cells and frozen. The plasma then undergoes a drying process and turns into a powder. It is poured into sealed bags, which are accompanied by containers with sterilized water. When blood is needed, water restores the plasma to its original liquid state, making it suitable for injection! Blood type does not matter here, since plasma does not contain blood cells. Therefore, it can be used anywhere and for any patient.

Author: Likum A.

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