Exam 2 Adverse Effects Flashcards
Most anticancer drugs are known to cause myelosuppression except for which drugs?
- VINCRISTINE
- BLEOMYCIN
- corticosteroids
- interferons
- L-asparaginase
- hormones
- methotrexate w/ leucovorin rescue
What are risk factors for myelosuppression?
- Poor marrow reserve (with increasing age)
- Type of chemotherapy
- Prior radiation to the pelvis
- Prior treatment with chemotherapy
- Concurrent treatment with radiation
- Impaired drug elimination
Which drugs do you renally adjust to decrease myelosuppression?
- cisplatin
- carboplatin
- methotrexate
- topotecan
Which drugs do you hepatically adjust to decrease myelosuppression?
- anthracyclines
- vinca alkaloids
- taxanes
- irinotecan
Which drugs are so toxic (myelosuppression) that it takes a long time to recover?
- Busulfan
- Carmustine
define neutropenia
Absolute Neutrophil Count (ANC) < 500/mm^3, or an ANC < 1000/mm^3 with expected to drop less than 500/mm3
What is the number one cause of treatment delays?
neutropenia
define neutropenic fever
neutropenia + fever of 101 degrees F or higher for more than one hour
What are the ways in which you can prevent neutropenia?
- dose reduction
- CSFs
When would you use a CSF to prevent neutropenia?
- if neutropenia (neutropenic fever) incidence is >= 20%
- (use GM-CSF) prevention of neutropenia in patients > 55 receiving induction therapy for AML
G-CSF dosing
5-10 mcg/kg/day SQ until ANC > 10,000/mm3
What are the CSFs?
- Filgrastim: G-CSF
- Pegfilgrastim: G-CSF long acting
- Sargramostim: GM-CSF
What is the administration window for CSFs?
> 24 hours but < 72 hours after start of chemotherapy
What is the benefit of giving G-CSF?
decreases number of febrile days hospital stay and number of antibiotics used
How long does Pegfilgrastim lasts?
14 days
How long do you give Filgrastim for?
until post-nadir ANC recovery to normal or near-normal levels (ANC of 10k)
What is the main adverse effect of CSFs?
- bone pain
- + fever for GM-CSF
When are you most likely to use growth factors? Cure or palliation?
cure
Which agents are commonly associated with thrombocytopenia?
- Topotecan
- Carboplatin
- Gemcitabine
- Bortezomib
When do you treat for thrombocytopenia?
- platelet counts < 10-20,000/mm^3 or < 50,000mm^3 with active bleeding
- fall / injury precautions
When should you give blood / platelet infusion in thrombocytopenia?
when platelet drops below 10k
What can you do to prevent thrombocytopenia?
- Interleukin-11 (oprelvekin)
- Dose reduction
Interleukin-11 (oprelvekin) MOA
stimulates platelet production through the stimulation of megakaryocytopoiesis and thrombopoiesis
Interleukin-11 (oprelvekin) dose
50 µg/kg SC once daily 6-24 hours after chemo until post-nadir platelet count is 100k cells/µL or for 21 days
Which agents are commonly associated with anemia?
- cisplatin
- carboplatin
- but can occur with any marrow toxic agent
Treatment / prevention of anemia
Transfusion of packed red blood cells (PRBCs) for hemoglobin < 8gm/dL or higher if severely symptomatic
What does EPO do?
speeds up process of stem cell differentiating into red blood cell
Erythopoietin (Procrit®) dosing
- 100-150 units/kg SQ three times a week or 40,000 units once a week
- can only increase dose once
When should you give Erythopoietin (Procrit®)?
give to high risk patients with hemoglobins <10gm/dL prior to chemotherapy
Darbepoetin alfa dosing
- know 500mcg every 3 weeks
- 1.5 mcg/kg/week to 6 mcg/kg every 3 weeks
Which drugs are most commonly associated with mucositis?
- 5-Fluorouracil (esp w/ bolus)
- Methotrexate
- Doxorubicin
- Taxanes
risk factors for mucositis
- Poor oral hygiene/dentures
- Leukemia / lymphoma
- Young age
- Radiation therapy
- Poor nutritional status
- High dose therapy
prevention of mucositis
- Oral hygiene
- Pretreatment dental evaluation
- Oral cryotherapy (ice chips)
- Leucovorin rescue (for methotrexate)
- Colony-stimulating factors? (theoretical benefit)
treatment of mucositis
- analgesics
- antifungal agents
- antiviral agents: acyclovir
- antibiotics: vancomycin
- growth factor: Palifermin
risk factors for diarrhea
- elderly
- female
Which agents are most commonly associated with diarrhea?
- 5-FU
- Interleukin-2
- Irinotecan
- Erlotinib (KNOW THIS)
- EGFR agents
- oral VEGF inhibitors
- ipilimumab (50% chance)