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44 Cards in this Set

  • Front
  • Back
How much can the marrow compensate for increased hemolysis?
5-8 times
3 signs of increased RBC production?
Increased reticulocyte count
Polychromasia
Erythroid hyperplasia in the marrow
3 signs of increased RBC destruction?
Increased LDH
Increased uncogugated bilirubin
Decreased hepatoglobin
How long does it take for the marrow to compensate for decreased RBCs?
4-7 days for retic count to go up
One intrinsic anemia that IS NOT inherited is?
Paroxysmal Nocturnal Hemoglobinuria (PNH)
Intravascular hemolysis can kill you by? (3)
Shock, DIC, renal failure
Cold agglutinin disease?
IgM attacks RBCs in cold tempuratures after an infection usually pneumonia.
Donath-Landerstieiner Antibodies?
IgG abs that bind RBCs in colder tempuratures and fix complement in warmer tempuratures. causes paroxysmal cold hemoglobinuria (PCH)
4 signs or intravascular hemolysis?
Hemoglobinemia
hemoglobinuria
hemosiderinuria
decreased haptoglobin
Direct antiglobulin (coomb's test) looks for?
immunoglobulin binding. autoimmuno hemolysis
Osmotic fragility test looks for?
hereditary spherocytosis
Sickle cell disease?
Sickle cell anemia with clinicl compliations
What is the main complication of sicklers?
Infarcts. lung, spleen brain and kidney
What are pts with no spleen more suseptable to?
encapulated organisms like Strep pneumoniae and hemophilius
What are the main crises of sicklers? (4)
Acute vasooccusive
sequestrian
acute hemolytic
acute aplasic
Diagnosis?
Hemoglobin CC disease
Diagnosis?
Hemoglobin SC disease
Most common RBC enzyme defect?
G6PD deficincy
Role of G6PD?
regenerates NADPH used to reduce back gluthathione after it detoxifies hydrogen peroixide
Inheretance pattern for G6PD?
X linked
Mechanism of anemia for G6PD deficincy?
increased sensitivity to oxidative stress
Heinz bodies?
aggregates of denatured hemoglobin seen with G6PD deficincy
What are these?

diagnosis?
Bite and Blister cells

G6PD deficency
Characterisitics of the african varient of G6PD?
mild activity G6PD activity decliens faster
charactersitics of mediteranian varient of G6PD?
reduced activity of G6PD even in retics. usually no helolysis at baseline and sensitivity of flava beans
Why might you get an normal value for G6PD during an attack?
The older cells that have the decreased activity are lyced leaving the normal younger cells
Spectrin?
Forms the skeleton of the RBC
Ankyrin?
Anchors the lipid bilayer to the spectrin sytoskeleton
What are these?
Spherocytes
How can spherocytosis be treated? (3)
RBC transfusion
Cholecystectomy
Splenectomy
Elliptocytosis is inhereted how?
Autosomal dominant
elliptocytosis Is usually caused by?
defects in spectin
what are these?

diagnosis?
elliptocytes

ellipocytosis
Hereditary pyropokilocytosis is caused by?
Autosomal recessive inheritance of ellipotocysosis gene
which antibodies usually bind at colder tempuratures?
IgM
Cold reacting hemolysis is usually secondary to?
infection
Acrocyanosis?
When fringers, tips of ears and toes turn blue due to RBC agglutination that plugs up capillaries.
Paroxysmal cold hemoglobinuria? (PCN)
IgG Ab (Donath-Lansteriner) bind RBC at colder tempuratures and then lyce at warmer tempuratures
Most warm-reactive hemolysis occures?
extravasularly, most often the spleen
What is the antigen target usually assosiated with warm autoimmune hemolysis?
RH
Who usually gets idiopathic warm autoimmune hemolytic anemia?
women
treatment for idiopathic warm autoimmune hemolytic anemia?
Prednisone but problems with tappering. avoid transfusions
Mechanism of drug absorption type anemia?
usually penicillin, binds to RBCs. Ab binds to penicillin and is taken in by macrophages.
Neoantigen type anemia?
drug binds to the RBC and forms and antigen that is able to fix complement. intravascular