oncology

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Author:
farevalo2
ID:
121691
Filename:
oncology
Updated:
2011-12-08 03:01:58
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cancer meds treatments
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FINAL EXAM oncology questions
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  1. which lab data is of most concern for pt undergoing radiation therapy?
    • Platelets < 100,000 = thrombocytopenia
    • this places pt at risk for bleeding and infection
  2. intruction for pt with severe stomatitis from chemo?
    nystatin swish and swallow, viscous lidocaine

    stomatitis- sores and ulcers, inflammation of tissues in the mouth
  3. appropriate intervention for a pt with lung cancer that develops superior vena cava syndrome?
    • monitor neuro status
    • neuro status can be compromised by increased intracranial pressure and lack of O2
  4. Glioma?
    can cause seizures, a brain tumor
  5. what symptoms are common in pts with bladder cancer?
    • hematuria without dysuria
    • hematuria (blood in urine) without painful urination
  6. care plan for pt with multiple myeloma
    • prepare for hemodialysis
    • due to increased serum viscosity
    • hematologic cancer, cancer of the blood
  7. what are secondary preventions?
    • gentic screening
    • exams: PAP, mammogram, breast, testicular
  8. cardiopulmonary system can be affected by which chemo drugs?
    Daunrubicin and doxorubincin
  9. how much of cancers are caused by the environment?
    75%
  10. interferons?
    • BRM: stimulate immune response to eradicate malignant growths
    • they have antiviral and antitumor properties
  11. what is DIC?
    formation of small blood clots inside the blood vessels throughout the body consume coagulation proteins and platelets, normal coagulation is disrupted and abnormal bleeding occurs from the skin
  12. S/S of DIC?
    • easy bruising, prolonged bleeding- gums and GI
    • acute DIC: life threatening hemorrhage and infarction
  13. in Hodgkin's disease what type of cell is present in the nodes and is unique to Hodgkins?
    Reed-Sternberg cells (gigantic atypical tumor cells)
  14. multiple myeloma?
    • malignant proliferation of plasma cells within the bone, lymph nodes, spleen, and liver
    • pain in: bones, esp ribs spine and pelvis
    • intervention: encourage fluids
  15. S/S of anemia:
    fatigue, hypoxia, hypotension, tachycardia, anxiety
  16. S/S of thrombocytopenia?
    • petechiae, bruising, beeding gums, hematuria
    • tx: platelet transfusion, avoid razors, soft toothbrush, no ASA
    • platelets < 100,000
  17. cancer is caused by:
    • external (tobacco, chemicals, radiation, infectious orgs)
    • internal factors (inherited mutations, hormones, immune conditions)
    • both alter genes or disturb genetic control
    • can strike at any age
  18. nutrition related to cancer?
    • salt-cured, smoked and nitrate cured foods have been linked with cancer
    • alcohol increases cancer risk
  19. cancer and genetic predisposition:
    • genetics largely control a persons predispostition to develop cancer
    • cancer develops ONLY in cells that have mutations, that is, damaged genes
    • mutations may be inherited or can be environmental
  20. what constitutes a cancer prevention lifestyle?
    • stop smoking (30% of cancer deaths)
    • avoid excessive sunlight (melanoma)
    • avoid obesity (high fiber, water, decrease fat intake, eat Vit A, C cruciferous veggies and beta carotene)
    • limit x ray exposure
    • occupational hazards
  21. precancerous conditions?
    • Hypertrophy- abnormally large cells
    • hyperplasia- increase in the number of cells
    • metaplasia- cell not typically found at that tissue
    • dysplasia- replacement of mature cell with one thats less mature
    • Anaplasia- cellular disorganization
  22. Neoplasm
    • abnormal growth of new tissue
    • begign or malignant
    • tumor
  23. malignant:
    • tending to become worse and cause death
    • anaplastic, invasive and metastic
  24. carcinoma:
    • arise from epithilial tissue
    • skin, large intestine, lungs, stomach, prostate, cervix or breast
  25. Sarcoma:
    cancers that arise from connective or muscle tissue
  26. normal cells;
    • have the capacity to transform energy and transmit energy from generation to generation
    • contact inhibition
    • adhesion-agglutination
    • linear reproduction (only 2 daughter cells)
    • differentiation: 2 daughter cells will mature and specialize
  27. cell cycle:
    • G1- RNA and protein synthesis
    • S - DNA synthesis occurs
    • G2- premitotic, mitotic spindle forms
    • Mitosis- cell division
    • G0- resting phase, these can be dangerous as they are not atively dividing
  28. abnormal cells:
    • no adhesion: cells break away and migrate
    • lack of contact inhibition
    • Anarachistic proliferation: divide out of control
    • dont specialize
  29. malignant cells:
    • Situ: in place
    • metastasis does not take place immidiatly
    • secrete chemicals that destroy the substances that hold the surrounding tissue together
    • then they enter the blood and lymph and travel to other parts of the body
  30. metastasis
    • spread of malignant cells from primary tumor to distant sites
    • hematogenous
    • lymphatic
    • angiogenesis
  31. histologic confirmation of cancer?
    cytology: examination of cells from tissue scrapings
  32. Biopsy of tumor:
    • incisional: wedge of tumor at margin
    • excisional: removal of entire mass and marins of normal tissue
    • needle methods: sample massess that are easily accessible (breasts)
  33. tumor staging and grading:
    • staging: extent or spread of disease
    • TNM system
    • grading: classification of tumor cells
    • G1- well differentiated
    • G2- moderatley well diff
    • G3/G4- poor-very poor diff
  34. tumor markers?
    • substance secreted by tumors, detectable in blood or urine
    • CEA carcinoembryonic antigen (colon cancers, also COPD), PSA (prostate), CA 125 (ovarian), AFP (liver, testicular cancers), human chorionic gonadotrophin (testicular)
  35. imaging tests:
    • chest x-rays
    • Ct scan (brain, lungs, abdomen)
    • bone scan
    • MRI
    • Positron emission tomography (PET scan shows abnormal tissue areas)
    • endoscopy
    • colonoscopy
  36. breast cancer treatment
    HERCEPTIN:
    • Monoclonal antibody
    • genetic fusing of cancer cells with normal cells can produce disease fighting specific antibodies tailored to seek and destroy targets that are cancer cells
  37. Surgery
    • Prophylactic
    • Pallative- to make pt as comfortable and pain free as possible even though the cancer cannot be treated or has not responded to treatment
    • Recontructive- breast (mastectomy), skin
  38. chemotherapy
    • the use of chemicals that act systemically to treat disease
    • affects the most rapidly dividing cells
    • can be primary treatment or adjuvant
  39. normal Neutrophil count:
    • 2500-6000 cells/mm3
    • Neutropenia: ANC < 500
    • Neupogen:to increase WBCs in pts with drug induced neutrpenia
    • Epoetin (Procrit)- antianemic, used for anemia caused by chemo (increase RBCs)
  40. Neupogen:
    INCREASE WBCs in pts with drug induced neutropenia
  41. Chemo side effects?
    • loss of hair: aloplasia
    • GI membranes: N & V: Zofran
    • sterility
    • increased risk of infection and bleeding
    • toxicity
    • stomatitis: Nystatin swish and swallow & Lidocaine so that there isnt pain so that they want to eat. Also Biotene to lubricate.
    • myelosuppression
    • renal damage
    • potential cardiac toxicities
  42. factors predisposing to infection in cancer pt:
    • poor WBC count- neutropenia (give Neupogen)
    • poor cellular immunity
    • skin and mucosal defects
    • prior infection with an org
    • RAW food with aerobic gram-negative org (raw fruits, veggies)
  43. effects of cancer: malnurition
    • loss of ability to taste SWEETS
    • alteration of taste perception marked by sensitivity to Bitterness

    Magace: give to increase appetite
  44. Biologic response modifiers:
    • naturally occuring treatment methods that can alter the immunologic relationship between the tumor and the cancer pt to provide a therapeutic benefit
    • Interferon
    • Interleukin-2
    • Monoclonal antibodies (Herceptin)
  45. malnutrition: meals and protein need:
    • work with dietician
    • aversion to meat intensifies as the day goes on so plan a protien filled bfast
    • 4-5 small meals a day
    • use creams, sauces, to lubricate food
  46. Antimetabolites
    • methotrexate
    • 5-Fluorouracil
    • they interfere with biosynthesis of metabolites or nucleic acids necessary for RNA and DNA synthesis
    • cell cycle specific (S phase)
    • SE: n&v, diarrhea, bone marrow suppression, proctitis, stomatitis, renal and hepatotoxicity
  47. Tamoxifen: breast cancer med
    • prevents natural hormones from feeding tumors, anti-estrogen drug given to post menopausal women who are ER positive.
    • most effective when given daily for 2 years
    • blocks effects of estrogen
  48. Megace: breast cancer med
    • blocks effects of estrogen
    • but primarily given to increase appetite in cancer pts.

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