Transfusion Medicine Flashcards

1
Q

Short half life
Expensive
Do not refrigerate

A

Platelets

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2
Q

Contents of cryoprecipitate

A

Factor 13
Fibrinogen
vWf + Factor 8

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3
Q

Given to limit chronic RBC transfusions

A

Erythropoietin: hematopoietic growth factor

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4
Q

GIven to avoid prolonged thrombocytopenia and risk of platelet transfusion

A

Romiplostim = thrombopoietin analogue: hematopoietic growth factor

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5
Q

Desmopressin

A

Procoagulant

Releases von Willebrand factor from endothelium

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6
Q

Recombinant Factor 7a

A

Procoagulant

Activator of extrinsic/common coagulation pathway

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7
Q

Prothrombin complex concentrates

A

Procoagulant

Vitamin K dependent clotting factors: Factor 2, 7, 9, 10, protein C, protein S

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8
Q

Factor 8, Factor 9 concentrates

A

Procoagulant

Specific factor replacement: Used in congenital and acquired hemophilia

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9
Q

Fibrin sealants

A

Procoagulant

Thrombin, fibrinogen, aprotinin, CaCl2 that promotes topical formation of fibrin on oozing surface

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10
Q

Aprotinin

A

Antifibrinolytics

Protease inhibitor: inhibits fibrinolytic enzymes (plasmin)

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11
Q

Tranexamic acid, episilon-aminocaproic acid

A

Antifibrinolytics

Competitively inhibit plasminogen conversion to plasmin

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12
Q

Immediate transfusion reactions

A

Hemolytic
Febrile
Allergic

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13
Q

Acute hemolytic transfusion reaction
Symptoms:

Labs:

A

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
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14
Q

Delayed transfusion reactions

A

Hemolytic
Graft vs. Host disease
Iron overload
Transfusion transmitted virus/parasite/prions

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15
Q

Drop in Hb days-weeks after transfusion of RBC
Postitive direct antiglobulin test
Increased CONJUGATED bilirubin

A

Delayed hemolytic transfusion reaction

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16
Q

Transfusion associated GVHD caused by:

A

Infusion of T cells that recognize patient cells as foreign, but immunocompromised pt T cells don’t recognize donor cells as foreign