👉 Transfusions are medical procedures in which blood is exchanged between two individuals. These exchanges occur when a person with serious illness needs more blood than their body can produce on its own, or when they have lost too much blood over time due to an injury, surgery, or other conditions. Transfusion involves the exchange of blood from one patient's blood system to another, which is usually done using a special device called an aneurysmal hemodialysis (AHD) machine. The transfusion