Im Flashcards
State the cytotoxic drug handling guidelines:
Trained personnel should reconstitute cytotoxics
Reconstitution should be carried out in designated pharmacy areas
Protective clothing (gloves, gowns, masks) should be worn
Eyes should be protected and means of first aid should be specified
Pregnant staff should avoid exposure to cytotoxic drugs (all females of child-bearing age should be informed of the reproductive hazard)
State antiproliferative immunosuppressants:
Azathioprine widely used for transplant recipients and is also used to treat autoimmune conditions. It is metabolised to mercaptopurine and doses should be reduced when allopurinol is given concurrently
Mycophenolate mofetil is metabolised to mycophenolic acid which has more selective mode than azathioprine
Mycophenolate mofetil reduces the risk of acute rejection episodes; the risk of opportunistic infections (particularly due to tissue-invasive cytomegalovirus) and the occurrence of blood disorders such as leucopenia may be higher
“Antiproliferative immunosuppressants” are medications that help prevent the immune system from attacking the body’s own cells and tissues by slowing down or stopping the growth of certain cells, such as those involved in inflammation or immune responses.
State the important safety information for ciclosporin:
Ciclosporin must be prescribed and dispensed by brand name
because switching between formulations without close monitoring may lead to clinically important changes in blood-ciclosporin concentration
State the important safety information for tacrolimus:
Tacrolimus must be prescribed and dispensed by brand name only, to minimise the risk of inadvertent switching between products, which has been associated with reports of toxicity and graft rejection
“Inadvertent switching between products” means mistakenly changing or using different products unintentionally.
State the cytotoxic drug side effects of vinca-alkaloids:
Neurotoxicity
Vinblastine (VBL), vinorelbine (VRL), vincristine (VCR) and vindesine (VDS)
Which cytotoxic drugs cause a sore mouth:
Most often associated with fluorouracil, methotrexate, anthracyclines
Good oral hygiene (rinsing the mouth frequently and effective brushing of the teeth with a soft brush 2-3 times daily is helpful
For fluorouracil, sucking ice chips during short infusions is helpful too
Fluorouracil is part of a group of chemotherapy drugs known as anti metabolites.
Methotrexate belongs to a class of drugs known as antimetabolites. It works by slowing or stopping the growth of cancer cells and suppressing the immune system.
Daunorubicin, doxorubicin, and epirubicin are anthracyclines.
All cytotoxic drugs cause bone-marrow suppression besides these 2 drugs:
Vincristine sulfate and bleomycin
State how soon bone-marrow suppression occurs:
Commonly occurs 7-10 days after administration but it is delayed for certain drugs, such as carmustine, lomustine and melphalan
State the cytotoxic drugs effect on pregnancy and reproductive function:
Most cytotoxic drugs are teratogenic and should not be administered during pregnancy especially in the 1st trimester
Exclude pregnancy before any treatment with cytotoxic drugs
Contraceptive advice should be given before cytotoxic therapy begins - women of child-bearing age should use effective contraception during and after treatment
State the cytotoxic drugs effect on reproductive function:
Regimens that do not contain an alkylating drug or procarbazine may have less effect on fertility
but those with an alkylating drug or procarbazine carry the risk of causing permanent male sterility (there is no effect on potency)
counsel patient on sperm storage
State the cytotoxic drugs effect on nausea and vomiting:
Mildly emetogenic treatment = fluorouracil, etoposide, methotrexate (less than
100mg/m2), vinca-alkaloids, abdominal radiotherapy
Moderately emetogenic treatment = the taxanes, doxorubicin hcl, intermediate and low doses of cyclophosphamide, mitoxantrone, and high doses of methotrexate (0.1-1.2g/m2)
Highly emetogenic treatment = cisplatin, dacarbazine, and high doses of cyclophosphamide
State the prevention of acute symptoms for patients at low risk of emesis:
Pre-treatment with dexamethasone or lorazepam may be used
State the prevention of acute symptoms for patients at high risk of emesis:
A 5-HT3-receptor antagonist, usually given by mouth in combination with dexamethasone
e.g.ondanestron
State a neurokinin receptor antagonist that may be used also for patients at high risk of emesis:
Arepitant
State the drug that it used for prevention of anticipatory symptoms and why:
Lorazepam can be helpful for its amnesic, sedative and anxiolytic effects
State the anthracycline side-effects:
Anthracycline-induced cardiotoxicity