blood disorders Flashcards
percent of blood made up of RBC
hematocrit
amount of protein in a volume of blood
hemoglobin
normal hemoglobin for women
11-15 g/dL
Normal hemoglobin for men
14-18 g/dL
normal hematocrit for men
39-54%
normal hematocrit for women
34-47%
appearance of cells in vitamin B12/folate anemia
macrocytic, hypochromic
Required for myelin formation
vitamin B12
neurologic findings may be irreversible
vitamin B12 anemia
Hemolytic anemia indicator:
RBC, hematocrit, hemoglobin
Decreased
hemolytic anemia indicator:
MCV
may be stable but RDW increases
reticulocyte count in hemolytic anemia
increased
blood smear of hemolytic anemia
schistocytes
increased iron and lactate dehydrogenase
hemolytic anemia
bilirubin is increased in _____
hemolytic anemia
Genetic disorder/RBCs have inadequate protection from oxidative stress
Glucose-6-phosphate dhehydrogenase deficiency (G6PD)
Fava beans exacerbate ____
G6PD deficiency
explain why fava beans exacerbate G6PD deficiency
damage RBC integrity and increase hemolysis due to oxidization
antibodies bind to RBC
autoimmune hemolytic anemia
often seen with SLE
Autoimmune hemolytic anemia
How does. thalassemia differ from iron deficiency anemia
thalassemia is genetic mutation of A or B hemoglobin chains
key component of hemostasis
rapid clot formation in a region of injury while suppressing clot extension beyond that region.
catalyst for intravascular clot formation
endothelial injury
most common bleeding disorder
autosomal dominant
heterogeneous
von willebrand disease
vicohows triad: favor pathological clot formation (nontrauma)
endothelial injury
venous stasis
hypercoagulability
von willebrand disease: genetic manifestation
autosomal dominant
incomplete penetrance
may have genotype without phenotype
Von Willebrand disease findings
mucosal bleeding, epistaxis, excessive childhood bruising, menorrhagia