Blood transfusion is the procedure of transferring blood from one person to another intravenously or through vascular catheters. This operation can be performed in emergency cases, for example, in case of large blood loss or various diseases. Transfusion is carried out by mixing the donor's blood with the recipient's blood. This procedure is carried out in medical institutions under the supervision of a doctor. A donor is a person who voluntarily provides his blood to save the life of another person. The recipient is the person or animal receiving the transfusion.
The circulatory system consists of the heart, which pumps blood through blood vessels. Blood contains oxygen and nutrients for body tissues. Blood loss is a condition when the amount of blood in the body is significantly less