Transfusion Medicine Flashcards
Short half life
Expensive
Do not refrigerate
Platelets
Contents of cryoprecipitate
Factor 13
Fibrinogen
vWf + Factor 8
Given to limit chronic RBC transfusions
Erythropoietin: hematopoietic growth factor
GIven to avoid prolonged thrombocytopenia and risk of platelet transfusion
Romiplostim = thrombopoietin analogue: hematopoietic growth factor
Desmopressin
Procoagulant
Releases von Willebrand factor from endothelium
Recombinant Factor 7a
Procoagulant
Activator of extrinsic/common coagulation pathway
Prothrombin complex concentrates
Procoagulant
Vitamin K dependent clotting factors: Factor 2, 7, 9, 10, protein C, protein S
Factor 8, Factor 9 concentrates
Procoagulant
Specific factor replacement: Used in congenital and acquired hemophilia
Fibrin sealants
Procoagulant
Thrombin, fibrinogen, aprotinin, CaCl2 that promotes topical formation of fibrin on oozing surface
Aprotinin
Antifibrinolytics
Protease inhibitor: inhibits fibrinolytic enzymes (plasmin)
Tranexamic acid, episilon-aminocaproic acid
Antifibrinolytics
Competitively inhibit plasminogen conversion to plasmin
Immediate transfusion reactions
Hemolytic
Febrile
Allergic
Acute hemolytic transfusion reaction
Symptoms:
Labs:
Fever, chills, hypotension, chest/back pain
Positive Direct antiglobulin test Increase LDH Increased bilirubin, indirect Low haptoglobin (remvoes free Hb from circulation) Hemoglobinemia, hemoglobinuria Spherocytes
Delayed transfusion reactions
Hemolytic
Graft vs. Host disease
Iron overload
Transfusion transmitted virus/parasite/prions
Drop in Hb days-weeks after transfusion of RBC
Postitive direct antiglobulin test
Increased CONJUGATED bilirubin
Delayed hemolytic transfusion reaction