Chemotherapy Agents (Pharmacology Ch 42) Flashcards Preview

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Flashcards in Chemotherapy Agents (Pharmacology Ch 42) Deck (44)
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1

Cytotoxic Chemotherapy Medications

1) antimetabolites
2) antitumor antibiotics
3) antimitotics
4) alkylating agents
5) topoisomerase inhibitors
6) other

2

Cytotoxic chemotherapy

-kill fast-growing cancer cells and healthy cells

3

Cytotoxic chemotherapy agents:
common adverse effects

-many due to the unintentional harm done to normal rapidly proliferating cells (those found in GI tract, hair follicles, bone marrow)
1) nausea and vomiting
2) myelosuppression
3) alopecia

4

Antimetabolites
pharmacological action
medications

*kill cancer cells by interrupting a specific phase of cell reproduction
1) folic acid analog
-prototype = methotrexate (Rheumatrex, Trexall)
-other = pemetrexed (Alimta)
2) pyrimidine analog
-prototype = cytarabine (Cytosar-U)
-other =
i. fluorouracil (Adrucil, Carac)
ii. capecitabine (Xeloda)
iii. floxuridine (FUDR)
3) purine analogs
-prototype = mercaptopurine (Purinethol)
-other =
i. thioguanine (Tabloid)
ii. pentostatin (nipent)
iii. fludarabine (Fludara

5

All Antimetabolite Agents
adverse effects and nursing interventions/client education

1) bone marrow suppression (low WBC count or neutropenia, bleeding caused by thrombocytopenia or low platelet count, and anemia or low RBCs)
-monitor WBC, absolute neutrophil count, platelet count, Hgb, Hct
-assess clients for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals
2) GI discomfort (nausea & vomiting)
-administer antiemetic such as ondansetron (Zofran) in combination with dexamethasone, granisetron (Kytril), or metoclopramide (Reglan) before beginning chemotherapy

6

Methotraxate specific adverse effects

1) mucositis (GI tract), gastric ulcers, perforation
-monitor for GI bleed and assess client's mouth for sores
-provide frequent oral hygiene using soft toothbrushes and avoid alcohol mouthwashes
2) reproductive toxicity (congenital abnormalities)
-advise female clients against becoming pregnant while taking these and 6 months after
3) renal damage due to hyperuricemia or elevated levels of uric acid
-monitor kidney function, BUN, creatinine, and I&O
-encourage adequate fluid intake of 2-3 L/day
-administer allopurinol if uric acid elevated

7

Cytarabine specific adverse effects

1) liver disease
-monitor liver enzymes. monitor for indications of jaundice
2) PE
-monitor breath sounds. advise clients to notify provider of SOB
3) arachnoiditis (indications include nausea, headache, and fever)
-advise clients to notify provider of N, V, headache, or fever. manifestations may be treated with dexamethasone (Decadron)

8

Mercaptopurine specific adverse effects

1) liver toxicity
-monitor liver enzymes. monitor for indications of jaundice
2) mucositis (GI tract), gastric ulcers, perforation
-monitor for GI bleed and assess client's mouth for sores
-provide frequent oral hygiene using soft toothbrushes and avoid alcohol mouthwashes
3) reproductive toxicity (congenital abnormalities)
-advise female clients against becoming pregnant while taking these and 6 months after

9

Antitumor Antibiotics
pharmacological action
medications

*kill cancer cells by stopping the synthesis of RNA, DNA, or proteins
1) anthracyclines
-prototype = doxorubicin (Adriamycin)
-other =
i. liposomal doxorubicin (Doxil)
ii. daunorubicin (Cerubidine)
2) nonanthracyclines
-prototype = dactinomycin (Cosmegen)
-other =
i. bleomycin (Blenoxane)
ii. mitomycin (Mutamycin)
iii. dactinomycin, liposomal (Doxil)

10

All Antitumor Antibiotics
adverse effects and nursing interventions/client education

1) bone marrow suppression
-monitor WBC, absolute neutrophil count, platelet count, Hgb, Hct
-assess clients for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals
2) GI manifestations (including nausea/vomiting, stomatitis)
-administer antiemetic such as ondansetron (Zofran) in combination with dexamethasone, granisetron (Kytril), or metoclopramide (Reglan) before beginning chemotherapy
-provide gentle oral care; rinse mouth with warmed saline solution
3) severe tissue damage due to extravasations of vesicants
-stop chemotherapeutic medications if extravasation occurs
-use central line for infusion
-only clinically trained personnel should give these meds IV
4) alopecia
-advise clients hair loss will occur 7-10 days after beginning of treatment and last max of 2 months after last administration of chemotherapeutic agent
-advise clients who want to do so to select hairpiece before occurrence of hair loss

11

Doxorubicin specific adverse effects

1) acute cardiac toxicity, dysrhythmias
-monitor ECG and echocardiogram
-client may be treated with dexrazoxane (Zinecard), but this med may increase myelosuppression
2) cardiomyopathy, heart failure (may have delayed onset)
-monitor ECG and echocardiogram
-client may be treated with ACE inhibitors
3) red coloration to urine and sweat
-advise clients this effect is not harmful

12

Antimitotics
pharmacological action
medications

*kill cancer cells by inhibiting mitosis and preventing cell division
1) vinca alkaloids
-prototype = vincristine (Oncovin, Vincasar PFS)
-other =
i. vinblastine (Velban)
ii. vinorelbine (Navelbine)
2) taxanes
-prototype = paclitaxel (Abraxane)
-other =
i. docetaxel (Taxotere)

13

Vincristine
adverse effects and nursing interventions/client education

1) peripheral neuropathy effects (weakness, paresthesia)
-advise clients to report manifestations. use caution to prevent injury
2) severe tissue damage due to extravasations of vesicants
-stop chemotherapeutic medications if extravasation occurs
-use central line for infusion
-only clinically trained personnel should give these meds IV
3) alopecia
-advise clients hair loss will occur 7-10 days after beginning of treatment and last max of 2 months after last administration of chemotherapeutic agent
-advise clients who want to do so to select hairpiece before occurrence of hair loss

14

Paclitaxel
adverse effects and nursing interventions/client education

1) bone marrow suppression
-monitor WBC, absolute neutrophil count, platelet count, Hgb, Hct
-assess clients for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals
2) bradycardia, heart block, MI
-monitor for cardiac effects
-advise clients to inform the nurse of any chest pain or SOB
3) alopecia
-advise clients hair loss will occur 7-10 days after beginning of treatment and last max of 2 months after last administration of chemotherapeutic agent
-advise clients who want to do so to select hairpiece

15

Alkylating Agents
pharmacological action
medications

*kill fast-growing cancer cells by altering DNA structure and preventing cell reproduction
1) nitrogen mustards
-prototype = cyclophosphamide (Cytoxan, Neosar)
-other =
-mechlorethamine (Mustargen), bendamustine (Treanda)
-chlorambucil (Leukeran
2) nitrosoureas
-prototype = carmustine (BiCNU, Gliadel)
-other =
i. lomustine (CCNU)
ii. streptozocin (Zanosar)
3) platinum compounds
-prototype = cisplatin (Platinol)
-other = carboplatin (Paraplatin)

16

All Alkylating Agents
adverse effects and nursing interventions/client education

1) bone marrow suppression
-monitor WBC, absolute neutrophil count, platelet count, Hgb, Hct
-assess clients for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals
2) GI discomfort (nausea & vomiting)
-administer antiemetic such as ondansetron (Zofran) in combination with dexamethasone, granisetron (Kytril), or metoclopramide (Reglan) before beginning chemotherapy

17

Cyclophosphamide specific adverse effects

1) acute hemorrhagic cystitis
-increase fluids (3 L daily)
-monitor for blood in urine
-mesna (Mesnex) may be given if needed. (a uroprotectant agent that detoxifies metabolites to reduce hematuria)
2) alopecia
-advise clients hair loss will occur 7-10 days after beginning of treatment and last max of 2 months after last administration of chemotherapeutic agent
-advise clients who want to do so to select hairpiece

18

Carmustine specific adverse effects

1) pulmonary fibrosis
-monitor lung function
-client may be treated with corticosteroids
2) liver and kidney toxicity
-monitor liver and kidney function

19

Cisplatin specific adverse effects

1) renal toxicity
-monitor kidney function.
-increase fluids and give a diuretic if indicated
2) hearing loss
-monitor for tinnitus and hearing loss

20

Topoisomerase Inhibitors
pharmacological action
medications

*kill cancer cells by interrupting DNA synthesis
1) prototype = topotecan (Hycamtin)

21

Topoisomerase Inhibitors
adverse effects and nursing interventions/client education

1) bone marrow suppression (low WBC count or neutropenia, bleeding caused by thrombocytopenia or low platelet count, and anemia or low RBCs)--may occur 4-6 wks after infusion
-monitor WBC, absolute neutrophil count, platelet count, Hgb, and Hct
-assess for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals. advise clients to continue precautions after treatment is completed.
2) GI discomfort (nausea & vomiting)
-administer antiemetic such as ondansetron (Zofran) in combination with dexamethasone, granisetron (Kytril), or metoclopramide (Reglan) before beginning chemotherapy
3) alopecia
-advise clients hair loss will occur 7-10 days after beginning of treatment and last max of 2 months after last administration of chemotherapeutic agent
-advise clients who want to do so to select hairpiece

22

Other Antineoplastic Agents
pharmacological action
medications

*kill cells by various mechanisms including interrupting DNA and RNA synthesis
1) asparaginase (Elspar)
2) hydroxyurea (Hydrea, Mylocel)
3) procarbazine (Matulane)

23

Asparaginase, hydroxyurea, and procarbazine
adverse effects and nursing interventions/client education

1) GI discomfort (nausea & vomiting)
-administer antiemetic such as ondansetron (Zofran) in combination with dexamethasone, granisetron (Kytril), or metoclopramide (Reglan) before beginning chemotherapy

24

Asparaginase specific adverse effects

1) hypersensitivity reaction
-premedicate if needed.
-monitor for wheezing and/or rash
-give test dose
-monitor closely
2) CNS effects ranging from confusion to coma; temporary tremor may occur
-monitor for CNS effects and evaluate frequently for changes
3) liver and pancreas toxicity
-monitor liver enzymes
-monitor for indications of jaundice
-monitor pancreatic enzymes
4) renal toxicity
-monitor kidney function.
-increase fluids and administer a diuretic if indicated

25

Hydroxyurea and procarbazine specific adverse reactions

1) bone marrow suppression (low WBC count or neutropenia, bleeding caused by thrombocytopenia or low platelet count, and anemia or low RBCs)--may occur 4-6 wks after infusion
-monitor WBC, absolute neutrophil count, platelet count, Hgb, and Hct
-assess for bruising and bleeding gums
-instruct clients to avoid crowds and contact with infectious individuals. advise clients to continue precautions after treatment is completed.

26

Procarbazine specific adverse reactions

1) peripheral neuropathy symptoms may include weakness and paresthesia
-advise clients to report manifestations
-use caution to prevent injury

27

Noncytotoxic Chemotherapeutic Medications

1) hormonal agents
-prostate cancer medications
-breast cancer medications
2) biologic response modifiers
3) targeted antineoplastic medications

28

Noncytotoxic Chemotherapy

-nontoxic to cells

29

Hormone Agonists

-cause an increase in a hormone and may be effective against tumors that require a particular hormone for support

30

Hormone Antagonists

-block certain hormones and may be effective against tumors that require a particular hormone for support