Anemia Flashcards
Normocytic anemia with increased absolute reticulocyte count (>100,000/uL) relfects
Bleeding or hemolysis
or
Response to therapy (iron, folate, B12)
Normocytic anemia with low retic count
inflammation with deficient erythropoietin,
nutritional deficiency,
hypometabolism,
primary hematopoietic disorder
A serum ferritin >___ rules out iron deficiency
100
If basophilic stippling is found on smear
check lead level
If target or sickle cells are on smear
check hemoglobin electrophoresis
If spherocytes are found
Check DAT
Signs of IDA
RLS, Hair loss, spoon nails
For Microcytic anemia, after checking Iron, ferritin and TIBC, you should check
Hemoglobin electrophoresis if studies are normal
Colonoscopy in positive FIT/FOBT or IDA is present
Patients with serum ferritin < 14
are iron deficient
Least expensive iron replacement
iron sulfate, every other day, for 6 months
If young woman with IDA does not respond to oral iron therapy and has IBS, check
test for celiac disease.
Drugs affecting folate metabolism/ DNS synthesis
alcohol, zidovudine, hydroxyurea, methotrexate
MCV >115 is always
megaloblastic disorders
In megaloblastic anemia, you also get penia of other cell lines
leukopenia, thrombocytopenia
Macrocytic anemia with large target cells and echinocytes (burr cells with spiny erythrocyte membrane projections) signifies
liver disease
Macrocytic anemia with large target cells, acanthocytes ( few spiny projection on erythrocyte membrane), howell- jolly bodies and nucleated erythrocytes signifies
Diminished spleen function
If serum B12 levels are borderline low.. order
MMA and homocysteine
Elevated homocysteine and MMA signifies
B12 deficiency
Elevated homocysteine and normal MMA is associated with
folate deficiency
Random cause for elevated MCV
Reticulocytes
B12 deficiency can present with
subacute combined degeneration of spinal column (neuro symptoms)without anemia
MCV in hemolytic anemia is
elevated (elevated reticulocytes
Congenital Hemolytic Anemias
Sickle cell
Hereditary spherocytosis
G6PD deficiency
Thalassemia