- Transfer of blood or blood component from one individual (donor) to another individual (receptor). [L. transfundo, pp. -fusus, to pour from one vessel to another]- exchange t. removal of most of a patient's blood followed by introduction of an equal amount from donors. SYN: exsanguination t., substitution t., total t..- indirect t. t. into a patient of blood previously obtained from a donor and stored under suitable conditions. SYN: mediate t..- intramedullary t. t., most commonly in infants, into the medullary cavity of a long bone, usually the femur or tibia.- intrauterine t. to treat erythroblastosis fetalis, Rh-negative blood is placed into the peritoneal cavity of the fetus.- mediate t. SYN: indirect t..- placental t. return to the newborn via the umbilical vessels of some of the fetal placental blood.- reciprocal t. an attempt to confer immunity by transfusing blood taken from a donor into a receiver suffering from the same affection, the balance being maintained by transfusing an equal amount from the receiver to the donor.- total t. SYN: exchange t..- twin-twin t. direct vascular anastomosis, arterial or venous, between the placental circulations of twins.
* * *1) the process of transfusing fluid into a vein or artery2) something transfused
* * *n.1. the injection of a volume of blood obtained from a healthy person (the donor) into the circulation of a patient (the recipient) whose blood is deficient in quantity or quality, through accident or disease. Direct transfusion from one person to another is rarely performed; usually packs of carefully stored blood of different blood group are kept in blood bank for use as necessary. During transfusion the blood is allowed to drip, under gravity, through a needle inserted into one of the recipient's veins. Blood transfusion is routine during major surgical operations in which much blood is likely to be lost.2. the administration of any fluid, such as plasma or saline solution, into a patient's vein by means of a drip. See also autotransfusion.
* * *trans·fu·sion (trans-fuґzhən) [L. transfusio] the introduction of whole blood or blood components directly into the bloodstream. Cf. infusion.
Medical dictionary. 2011.