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44 Cards in this Set
- Front
- Back
How much can the marrow compensate for increased hemolysis?
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5-8 times
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3 signs of increased RBC production?
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Increased reticulocyte count
Polychromasia Erythroid hyperplasia in the marrow |
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3 signs of increased RBC destruction?
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Increased LDH
Increased uncogugated bilirubin Decreased hepatoglobin |
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How long does it take for the marrow to compensate for decreased RBCs?
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4-7 days for retic count to go up
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One intrinsic anemia that IS NOT inherited is?
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Paroxysmal Nocturnal Hemoglobinuria (PNH)
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Intravascular hemolysis can kill you by? (3)
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Shock, DIC, renal failure
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Cold agglutinin disease?
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IgM attacks RBCs in cold tempuratures after an infection usually pneumonia.
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Donath-Landerstieiner Antibodies?
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IgG abs that bind RBCs in colder tempuratures and fix complement in warmer tempuratures. causes paroxysmal cold hemoglobinuria (PCH)
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4 signs or intravascular hemolysis?
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Hemoglobinemia
hemoglobinuria hemosiderinuria decreased haptoglobin |
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Direct antiglobulin (coomb's test) looks for?
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immunoglobulin binding. autoimmuno hemolysis
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Osmotic fragility test looks for?
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hereditary spherocytosis
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Sickle cell disease?
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Sickle cell anemia with clinicl compliations
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What is the main complication of sicklers?
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Infarcts. lung, spleen brain and kidney
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What are pts with no spleen more suseptable to?
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encapulated organisms like Strep pneumoniae and hemophilius
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What are the main crises of sicklers? (4)
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Acute vasooccusive
sequestrian acute hemolytic acute aplasic |
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Diagnosis?
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Hemoglobin CC disease
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Diagnosis?
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Hemoglobin SC disease
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Most common RBC enzyme defect?
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G6PD deficincy
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Role of G6PD?
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regenerates NADPH used to reduce back gluthathione after it detoxifies hydrogen peroixide
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Inheretance pattern for G6PD?
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X linked
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Mechanism of anemia for G6PD deficincy?
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increased sensitivity to oxidative stress
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Heinz bodies?
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aggregates of denatured hemoglobin seen with G6PD deficincy
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What are these?
diagnosis? |
Bite and Blister cells
G6PD deficency |
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Characterisitics of the african varient of G6PD?
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mild activity G6PD activity decliens faster
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charactersitics of mediteranian varient of G6PD?
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reduced activity of G6PD even in retics. usually no helolysis at baseline and sensitivity of flava beans
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Why might you get an normal value for G6PD during an attack?
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The older cells that have the decreased activity are lyced leaving the normal younger cells
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Spectrin?
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Forms the skeleton of the RBC
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Ankyrin?
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Anchors the lipid bilayer to the spectrin sytoskeleton
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What are these?
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Spherocytes
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How can spherocytosis be treated? (3)
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RBC transfusion
Cholecystectomy Splenectomy |
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Elliptocytosis is inhereted how?
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Autosomal dominant
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elliptocytosis Is usually caused by?
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defects in spectin
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what are these?
diagnosis? |
elliptocytes
ellipocytosis |
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Hereditary pyropokilocytosis is caused by?
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Autosomal recessive inheritance of ellipotocysosis gene
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which antibodies usually bind at colder tempuratures?
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IgM
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Cold reacting hemolysis is usually secondary to?
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infection
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Acrocyanosis?
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When fringers, tips of ears and toes turn blue due to RBC agglutination that plugs up capillaries.
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Paroxysmal cold hemoglobinuria? (PCN)
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IgG Ab (Donath-Lansteriner) bind RBC at colder tempuratures and then lyce at warmer tempuratures
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Most warm-reactive hemolysis occures?
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extravasularly, most often the spleen
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What is the antigen target usually assosiated with warm autoimmune hemolysis?
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RH
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Who usually gets idiopathic warm autoimmune hemolytic anemia?
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women
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treatment for idiopathic warm autoimmune hemolytic anemia?
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Prednisone but problems with tappering. avoid transfusions
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Mechanism of drug absorption type anemia?
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usually penicillin, binds to RBCs. Ab binds to penicillin and is taken in by macrophages.
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Neoantigen type anemia?
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drug binds to the RBC and forms and antigen that is able to fix complement. intravascular
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