Pharm/Anemia Flashcards
Best form of oral iron
Ferrous
Deferoxamine MOA
Iron-chelator
Deferoxamine excretion & side effects
Urine - red
Acute iron overload - what do you give?
Deferoxamine
Deferoxamine side effects
Tachycardia, hypoT, shock
Deferoxamine route of admin
IV
Deferasirox indication
Chronic iron overload from multiple transfusions, and for acute iron overload due to ingestion
Deferasirox side effects
GI; auditory and visual disturbances; inc creatinine and hep enzymes
Two forms of B12 supplementation
Cyanocobalamin and hydroxocobalamin
Which form of B12 is best?
Hydroxocobalamin, because it is more highly protein-bound and remains longer
How does leucovorin interact with folic acid?
Reduces folate levels and rescues cells from folate antagonism (MTX); modulates effect of 5-FU
Levomofolate - what is it?
Bioactive form of folate in circulation
Methotrexate is liable to induce what kind of deficiency?
Folic acid via dihydrofolate reductase inhibition
How does phenytoin induce its folate deficiency?
Inhibits intestinal uptake
How does pyrimethamine induce its folate deficiency?
Similar to MTX, inhibits DHF reductase (not as badly though)