Chemotherapy Flashcards
Common Alkylating Agents
- Nitrogen mustards - Cyclophosphamide + Ifosfamide, bendamustine + chlorambucil
- Triazenes: Dacarbazine, temozolomide
- Nitrosureas: streptozotocin, carmustine
- Platins - carbo, cis, oxali
- Other: Busulfan
How to alkylating agents work + what are the routes
-impair cell function by breaking DNA helix + interfering with DNA replication
-IV and PO
What to watch for with cyclophosphamide
-hemorrhagic cystitis
-transient SIADH
What to look for with Busulfan
“Busulfan lung” - fibrosis
what to watch for with cisplatin
-renal toxicity and electrolyte imbalance
What alkylating agent is the least toxic
-Chlorambucil
Administrating advice with Dacarbazine
-painful IV - reduce pain by withdrawing blood into syringe before injecting
education for cyclophosphamide
-push fluids and empty bladder frequently
Common Antimetabolites
-bines/dines/sines: Azacitidine, cladribine, clofarabine, cytarabine, cytosine, decitabine, fludarabine, capecitabine, gemcitabine, nelarabine - 10!!
-other: 5FU, leucovorin, pentostatin
-exes: Pemetrexed, pralatrexate, raltitrexed, trimetrexate
How do antimetabolites work
-inhibit enzymes necessary for DNA synthesis
what are routes for antimetabolites
-IV
-Intrathecal (cytarabine, MTX)
-PO
-Intracavity, topically - 5FU
common side effect for cladribine
Fevers - 50%
Common side effect for clofarabine
-LFT abnormalities (80%)
Common side effect for capecitabine
hand-foot syndrome
common side effect for decitabine
low K/low Mg
Concern for intrathecal MTX
-acute aseptic meningitis
Concern with high-dose Ara-C
-cerebellar toxicity + keratitis
Concner with 5FU
photosensitivity
What is contraindicated while on gemcitabine
What is contraindicated while on Fludarabine
-no gemcitabine while on radiation
-no fludarabine with pentostatin - causes fatal pulmonary toxicity
how does leucovorin work with MTX
-rescue for antifol toxicity
what do you do for giving pentoastatin
-2L D5NS
education for patients getting 5FU bolus
-suck on ice
Antitumor antibiotics
-mycin/icin
-Actinomycin, Bleomycin, Mitomycin, mitoxantrone
-Daunorbicin, Doxorubicin, Epirubicin, Idarubicin
how do antitumor antibiotics work
-prevent DNA replication and RNA production + other things
how can you give Antitumor Antibiotics
-Infusion
-IVP
-IM/SC/intrapleural (bleomycin)
-intravesicular (mitomycin)
Bleo concerns + curiosities
-hypersensitivity
-pneumonitis/pulmonary toxicity - need PFT
-may produce a rancid smell about 10sec after injection
Daunorubicin concerns
-precipitous fatal cardiomyopathy months after administration
Doxorubicin concern
-“radiation-recall reaction” - former radiation sites will desquamate
Mitomycin concern
-Hemolytic Uremic Syndrome (HUS) - rare but potentially fatal - hemolysis leading to renal failure
-with 6+ months of mitomycin therapy
Common plant alkaloids
-cabacitaxel, docetaxel, paclitaxel
-Vs: Vincristine, vinblastine, vinorelbine, vindesine
-Eribulin, estramustine, ixabepilone
how do plant alkaloids work?
-inhibit microtubule assembly which dissolves mitotic spindle structure
% alopecia with taxol
90%
big concern with cabazitaxel
-pancytopenia
concern with eribulin
-prolonged QT
Concern with estramustine + use
Gynecomastia and thromboembolism
-only used with prostate cancer
Concern with Vinblastine and Vincristine
-Vinblastine - muscle cramps/pain
-Vincristine - constipation
Contraindications with ixabepilone
-grape juice and St. John’s wort
Common Topoisomerase inhibitors
-etop + teniposide
-topotecan + irinotecan
how. totopoisomerase inhibitors work?
-inhibit topoisomerase which interferes with transcription/replication of DNA
Etop routes
can be oral or IV
Contraindication for etoposide
-administering <30 min infusion - causes hypotension
-St. John’s wort
-watch for crystallization in tubing
Tyrosine Kinase Inhibitors (TKIs)
-NIBS
-Crizotinib, Dasatinib, Erlotinib, IMatinib, .. and more
how do TKIs work
-prevent transfer of phosphate from ATP to a cell protein which prevents intracellular communication and activity like cell division
-prevents mutated cells from proliferating
Routes for TKIs
-oral only
Dosing for TKIs
-set dosage and tolerance based, not weight
Crizotinib concern
-visual disturbances
Dasatinib concern
-Low ca/phos
Erlotinib concern
LOng QT, and rash
Imatinib concern
transient fluid retention
Pzopanib concern
-HTN
Contraindications for dasatinib
-antacids/PPIs
Sutinib + Sorafenib
-Sutinib - bleeidng (nose, etc) + yellow skin + diarrhea
-Sorafenib - hand/foot reaction + Diarrhea
Contraindications erlotinib
-grapefruit juice, st. John’s wort + smoking
administration for TKIs
-Empty stomach
-Meal + water
-empty: erlotinib, lapatinib, nilotinib, pazopanib, sorafenib
-food - imotinib
-DONT CRUSH