Heme Part II Flashcards
Anemia
Reduction in number or in quality or quantity of Hgb
Hemoglobin content low
Hypochromic or normal (normochromic)
Anisocytosis
RBCs various sizes
Poikilocytosis
RBCs different shapes
Anemia Clinical manifestations
Hypoxia Syncope ANgina Compensatory tachycardia Organ dysfunction.
Macrocytic-Normochromic
Megaloblastic anemia cells unusually large DNA synthesis is defective Usually due to deficiencies in B12 or folate (B9) • Co-enzymes for nuclear maturation and the DNA synthesis pathway
Pernicious anemia
most common megaloblastic anemia
Lack of intrinsic factor Requires B12 absorption
Congenital or autoimmune
H pylori and PPI increase risk
Pernicious anemia S&S
Weakness, fatigue
paresthesia,
loss of appetite, abdominal pain, weight los
Atrophic glottis
Indicative of Pernicious anemia
B12 deficiency.
B9 cheilitis
Know picture of pernicious anemia
pernicious
Folate B9 deficiency
malnourishment
Neural tube defects
sphenocytes
RBCs shaped like a sphere.
Abnormal small cells with pale color
Microcytic-hypochromic anemia
Causes of microcytic-hypocrhomic anemia
Disorders of iron metabolism
porphyrin
Microcytic hypochromic
Cause Cutaneous porphyria
Caused by defective heme production