Blood transfusion is a therapeutic method of transfusion to patients through vein, which is widely used in clinic. Blood transfusion in a narrow sense refers to the infusion of whole blood, while blood transfusion in a broad sense refers to the infusion of various tangible or intangible components prepared from blood. Strictly speaking, hematopoietic stem cells (bone marrow or peripheral blood) can also be regarded as a special blood transfusion.

Blood transfusion history: the earliest blood transfusion was in 1667. A French aristocrat gave a homeless man with mental disorder 280 ml of calf blood in an attempt to treat his mental problems. The unfortunate patient survived miraculously after experiencing severe immune response and wandering around the gate of hell several times, and remained calm for a period of time, so blood transfusion therapy was accepted by some doctors with innovative ideas.

In the next 300 years, blood transfusion therapy is still in the exploratory stage. Without relevant knowledge (such as blood type), blood transfusion caused many deaths, but doctors also found that blood transfusion can really save lives. It was not until 19 12 that Dr. Karel, a Frenchman, won the Nobel Prize for creating vascular anastomosis for blood transfusion, and blood transfusion therapy won wide recognition.

Blood transfusion began to be widely used:

The person who really makes blood transfusion a scientific and effective treatment method is the Viennese pathologist Karl Landsteiner. He discovered human ABO blood group and agglutination law from 190 1, which provided a solid pathophysiological basis for modern blood transfusion. In the following 20 years, other doctors gradually established blood anticoagulation and cross-matching techniques, and blood transfusion became a routine treatment method in all hospitals.