Anemia's Flashcards
what anemia is due to the lack of b12?
pernicious anemia
how do we classify pernicious anemia?
macrocytic normochromic
how is pernicious anemia created? (cause)
Gastrectomy
Commonly diagnosed at 60
Atrophy of gastric mucosa
Autoimmune disorder
(lack of intrinsic factor needed for b12 absorption)
what happens to RBC’s that are produced without intrinsic factor?
they are phagocytized in the bone marrow before maturing (b12 involved in DNA integrity)
what are the clinical manifestations of pernicious anemia?
Weakness and fatigue
Beefy red tongue from inflammation
Jaundice
Abdominal pain
Neurological symptoms -nerve demyelination
how do you treat pernicious anemia?
b12 shot to help with absorption
why is folate important?
Folic acid is necessary for DNA and RNA synthesis
lack of folate is associated with neural tube defects in the fetus
who is common to have folate deficiencies?
alcoholics, and those with chronic malnourishment
what is the treatment for folate anemia?
folic acid supplements
what is folate anemia classified as?
Macrocytic-normochromic
what is iron deficiency anemia characterized as?
Microcytic-hypochromic anemia
who is most at risk for iron deficiency anemia?
Older adults - choking, may not have a nutritious diet, may be told by their doc to not eat certain things, troubles with absorption due to meds
Women - menstruation, losing RBCs
Infants - not nutritious enough formula or breast milk
People in poverty - meat is expensive
what are the causes of iron deficiency anemia?
Inadequate diet
Chronic blood loss
Chronic parasitic infection
Menorrhagia
what re stages of iron deficiency anemia?
First, there is more demand for iron than the supply
Stage I - iron storages depleted
Stage II - iron transport to bone marrow diminished - iron deficient RBCs
Stage III - small, iron deficient cells enter bloodstream to replace old RBCs
heme iron:
red meat, 25% is absorbed by RBC’s
