cancer drugs Flashcards
dose limiting toxicity
toxicity that may result in a dosage decrease or treatment delay or discontinuation
ex myelosuppression
hallmark toxicity
a toxicity that is significant or unique for a particular drug
not always dose-limiting
ex. teratogenicity, hair loss
cyclophosphamide, ifosfamide MOA
alkylating agents
HMT of alkylating agents
hemorrhagic cystitis (s/s of UTI)
hydrate before & after therapy! urinate frequently!
mesna may help
cisplatin, carboplatin, oxiplatin MOA
platinum agents
cisplatin HMT & special info
N/V
significant!!! pretreat & hydrate
delayed hypersensitivity
carboplatin HMT & special info
myelosuppression
dosed based on area under the curve
delayed hypersensitivity
oxaliplatin HMT & special info
peripheral neuropathy exacerbated by cold
prolonging admin way help
delayed hypersensitivity
methotrexate MOA
folate analog - inhibits DHFR which depletes cofactors for thymidylate and purine synthesis
methotrexate HMT & special info
myelosuppression, mucositis & diarrhea, nephrotixicity
interactions w bactrim & NSAIDs
Leucovorin helps with HMTs
keep urine pH >7 to help w nephrotox
5-FU & capecitabine MOA
pyrimidine analogs
nucleoside analaogs
5-FU HMT & special info
stomatitis, diarrhea
drug interactions w warfarin
leucovorin helps enhance efficacy and toxicity
capecitabine HMT & special info
hand-foot syndrome
PO
counsel about hand-foot syndrome! can get worse
6-mercaptopurine MOA ?????
purine analog
converted to inactive metabolite by xanthine oxidase
allopurinol inhibits xanthine oxidase, so we must decrease the dose of 6-mercaptopurine if using allopurinol
vincristine MOA
vinca alkaloid - bind to tubulin and block polymerization into microtubules
vincristine HMT & special info
peripheral toxicity
fatal if given intrathecally –> dispense in mini-bags
paclitaxel MOA
microtubule-damaging agent
paclitaxel HMT & special info
complete alopecia
hypersensitivity - pre-med w dexamethasone, benadryl, H2antagonist
ironotecan MOA
camptothecin analog
ironetecan HMT & special info
delayed diarrhea
loperamide 4mg at onset then 2mg q2
UGT1A1 mutation