direct transfusion

transfusion /trans·fu·sion/ (-fu´zhun) the introduction of whole blood or blood components directly into the bloodstream.

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direct transfusion  immediate t.

exchange transfusion  repetitive withdrawal of small amounts of blood and replacement with donor blood, until a large proportion of the original volume has been replaced.

immediate transfusion  transfer of blood directly from a vessel of the donor to a vessel of the recipient.

indirect transfusion , mediate transfusion introduction of blood which has been stored in a suitable container after withdrawal from the donor.

placental transfusion  return to an infant after birth, through the intact umbilical cord, of the blood contained in the placenta.

replacement transfusion , substitution transfusion exchange t.

twin-to-twin transfusion  an intrauterine abnormality of fetal circulation in monozygotic twins, in which blood is shunted directly from one twin to the other.

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direct transfusion

n.

Transfusion of blood from the donor directly to the recipient. Also called immediate transfusion.

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direct transfusion

Etymology: L, dirigere, to direct, transfundere, to pour through

the transfer of whole blood directly from a vein of the donor to a vein of the recipient.

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transfusion

the introduction of whole blood or blood components directly into the bloodstream. Among the elements transfused, in addition to whole blood, are packed red blood cells, plasma, platelets, granulocytes and cryoprecipitate, a plasma protein rich in antihemophilic factor VIII. See also autotransfusion.

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autologous blood transfusion

transfusion of the animal's own blood.

blood transfusion

whole blood is most often indicated to maintain or replace blood volume, to provide deficient blood elements and improve coagulation, to maintain or improve transport of oxygen, and in liver failure in which toxins accumulate in the blood, or in some other types of toxemia.

direct transfusion

transfer of whole blood from the donor through a tube, directly to the recipient.

exchange transfusion

blood is removed from the recipient at the same time and in the same amount as blood is being administered from the donor.

incompatible transfusion

see transfusion reaction (below).

transfusion reaction

a group of clinical signs due to antibody in the recipient's blood reacting with the transfused red blood cells when blood for transfusion is incorrectly matched, or when the recipient has an adverse reaction to some element of the donor blood. Most commonly, there is an immune-mediated hemolysis involving alloantibodies, which may be naturally occurring or the result of an earlier transfusion, in the recipient's serum and the donor's erythrocytes. In ruminants, signs appear during the transfusion, beginning with hiccough, then tremor, dyspnea, lacrimation, fever, ruminal tympany, hemoglobinuria and subsequent abortion. If death occurs, it is because of pulmonary edema. Similar signs are seen in other species. Urticaria and erythema sometimes occur in dogs and cats.

Nonimmunological transfusion reactions include cardiovascular overload, hypocalcemic tetany from citrate (used as the anticoagulant) overload, and disease transmission.

transfusion therapy

the administration of whole blood or blood components, usually in the treatment of bleeding disorders.