Anemia Flashcards
Define glossitis
inflamed, sore tongue
Define Koilonychias
thin, concave, spoon-shaped nails
Define pica
craving and eating non-foods such as chalk or clay
Which anemia presents with glossitis, koilonychias, and pica
iron deficient anemia
What does B12 deficiency present with
neurologic symptoms such as peripheral neuropathies, visual disturbances, psychiatric symptoms
What is MCV
mean corpuscular volume
-reflects the size or average volume of rBCs
what does a low MCV mean
RBCs are smaller than normal (microcytic)
What does a high MCV mean
RBCs are larger than normal (macrocytic)
What value is microcytic MCV
< 80
cause of microcytic anemia
iron deficiency
what is normocytic MCV
80-100
What is macrocytic MCV
> 100
What causes macrocytic MCV
vitamin B12 or folate deficiency
Lab findings of iron deficient anemia
low Hgb, MCV <80, low RBC, low serum iron, low ferritin, low TSAT, high TIBC
antidote for iron overdose
deferoxamine
is iron absorbed better in basic or acidic environment
acidic
vit C and Iron
vit C increases the absorption of iron by providing an acidic environment
Define pernicious anemia
the most common cause of vitamin B12 deficiency due to a lack of intrinsic factor which is required for adequate vit B12 absorption in the small intesntsine
Treatment of macrocytic anemia
vitamin B12 injections
Normocytic anemia is caused by
acute blood loss
malignancy
CKD
Anemia of CKD due to
deficiency in erythropoietin a hormone produced by the kidneys that stimulates the bone marrow to produce RBCs
Treatment for anemia of CKD
ESA
iron therapy
ESAs are ineffective if?
iron stores are low
Initiate ESAs when Hgb is
<10
IV route of ESAs is preferred for whom
patients on HD
frequency of epoetin alfa
3x/wk
frequency of darbepoetin
weekly
Define aplastic anemia
occurs when bone marrow fails to make enough RBCs, WBCs, and platelets
define hemolytic anemia
RBCs are destroyed and removed from the bloodstream before their normal lifespan of 120 days
Drugs that cause hemolytic anemia (6)
dapsone methylene blue primaquine pegloticase rasburicase VPA