Shared Flashcard Set

Details

Winter Exam #2 - Anemia Agents, Hematopoietic Growth Factors
n/a
17
Pharmacology
Graduate
01/09/2010

Additional Pharmacology Flashcards

 


 

Cards

Term
anemia
Definition
condition in which hemoglobin concentration is below normal levels; Hct <41%, Hgb <13.5 g/dL in men; Hct <37%, Hgb <12g/dL in females
Term
Iron Deficiency Anemia
Definition
without this element, the haem moiety of hemoglobin cannot be synthesized; results in smaller RBCs (microcytic, hypochromic) because they contain less hemoglobin
Term
megoblastic anemias
Definition
conditions caused by deficiency in vitamin B12 (pernicicious) or folic acid (folate deficiency)
Term
pernicious anemia
Definition
most common cause of vitamin B12 deficiency; results as a consequence of lack of intrinsic factor secretion due to gastric mucosal atrophy
Term
oral iron - ferrous sulfate, ferrous gluconate, ferrous fumarate
Definition
MoA: component of hemoglobin, myoglobin, stored in ferritin or homosiderin; Uses: prevention & tx of iron deficiency anemias; Toxicity: GI irritation, nausea, vomiting, constipation, diarrhea, dark stools; D-D Interactions: eggs, milk, coffee, antacids, tetracyclines, fluoroquinolones, & tea all inhibit absorption; Vitamin C enhances absorption; Lethal dose: 200-250 mg/kg
Term
IV iron - iron dextran
Definition
complex of ferric hydroxide & dextran; used IM or IV; complex dissociates & ferric iron is transported by ferritin & incorporated into hemoglobin & storage sites; ADRs: fatal analphylactic rnxs, hypersensitivity rxns, soreness & inflammation at injection site, brown skin discoloration; Uses: for anemic pts with iron deficiency that are unable to orally absorb Fe
Term
folic acid
Definition
cofactor required for DNA synthesis; Uses: megoblastic anemias (sprue, pregnancy, nutritional anemias); Toxicities: C/I for pernicious anemia leading to neurologic complications, relatively nontoxic; Use ORAL or IV, IM; Recommended pregnancy daily dose: 0.4 mg/day --> reduces risk of neural tube defects
Term
vitamin B12 - cyanocobalamin, hydroxocobalamin
Definition
cofactor for: methylmalonyl-CoA mutase, methionine synthase; Uses: megaloblastic anemias (sprue, pregnancy, nutritional), pernicious anemias; Toxicities: Leber's dx (optic nerve atrophy), hypersensitivity (anaphylactic shock); Pregnancy dose: 2.2 ug/day; for Pernicious Anemia: use parenterally only, needs it ALL their life
Term
epoetin alfa (Erythropoietin, EPO, Epogen, Procrit)
Definition
Structure: recombinant glycoprotein (165 aa); MoA: growth & differentiation of stem cells into erythrocytes; Uses: anemias of chronic disease (renal, AZT-treated AIDS, cancer chemo pts); Toxicities: flulike sx, hypertension; IV or SC
Term
filgrastim (G-CSF, Granulocytes Colony Stimulating Factor, Neupogen)
Definition
Structure: recombinant glycoprotein (127 aa); MoA: growth & differentiation of stem cells of NEUTROPHIL lineage; Uses: chemotherapy induced neutropenia, bone marrow transplantation, HIV neutropenia; toxicities: Well Tolerated; IV
Term
sargromostim (GM-CSF, Granulocyte Macrophage Colony Stimulating Factor, Leukine)
Definition
Structure: recombinant glycoprotein (127 aa); MoA: growth & differentiation of stem cells into GRANULOCYTES & MACROPHAGES; Uses: myeloid recovery in cancer pts, bone marrow transplantation; Toxicities: well tolerated; IV
Term
oprelvekin (Interleukin 11, IL-11, Neumega)
Definition
Structure: recombinant polypeptide (177 aa); MoA: growth & differentiation of stem cells into MEGAKARYOCYTES & PLATELETS; Uses: prevention of thrombocytopoenia in cancer pts; Toxicities: well tolerated; IV
Term
deferoxamine mesylate (Desferal)
Definition
used for iron overdose; chelates iron by forming a stable complex that prevents iron from entering into further chemical rxns; removed in urine, causing reddish urine color;
Term
Recommended Dietary Allowances for Iron
Definition
adult males: 10 mg; adult females: 15 mg; pregnancy: 30 mg/day; lactation: 15 mg
Term
folate deficiency
Definition
folate levels below 5 ng/mL
Term
megoblastic anemia
Definition
folate levels below 2 ng/mL
Term
normal serum folate levels
Definition
5 - 15 ng/mL
Supporting users have an ad free experience!