Haematology

Hematology and Oncology: promontory 10 The correct answer is C Educational Objectives Recall the purpose of farm animal ray of well-off prior(prenominal) to transfusion. literary criticism The sole reason for blood irradiation is to forbid on transfusion-related graft-versus-host disease (GVHD) in patient ofs at happen for it. Transfusion-related GVHD has a high gear mortality rate. Not moreover are the liver, skin, and gastrointestinal dodge under immunologic attack, but the recipients bone marrow is as well destroyed by the donor T cells. Gamma irradiation of cellular blood products interdicts transfusion-related GVHD by rendering donor T cells nonviable and incompetent of mounting a GVHD response. The battery-acid employ is between 25 and 50 Gy. Higher doses may interrupt with the function or survival of red cells and platelets. Leukocyte reduction is non sufficient for this purpose be driveway it leaves arsehole too m all cells. jibe at this dose has no effect on the transmittance of cytomegalovirus (or any pathogen), alloimmune sensitization, or leukocyte antigenicity. Although the cells are nonviable and provide non cause a sustained attack against the host, they notify still extend cytokine. Therefore, irradiation will not prevent febrile reactions. radiation therapy has no effect on any of the mechanisms of transfusion-induced hemolysis.

Hematology and Oncology:Question 11 The correct answer is E Educational Objectives look at the appropriate timing for a work-up for a hereditary hypercoagulable state. Critique No testing is necessary; the patient should be started on anticoagulation therapy. Although her family history suggests that she has an unde! rlying hereditary reproach predisposing to venous thromboembolism, it is incredible that she has the factor V Leiden or factor II G2021 0A renewal because these abnormalities are not found in indigene Asiatic populations. It is possible that she has a deficiency of protein C, protein 5, or antithrombin III, but it is not advisable to test for these abnormalities...If you want to get a bounteous essay, order it on our website: OrderEssay.net

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