test 2 Flashcards
chemotherapy
-narrow therapeutic index
-combination drugs
-doses carefully calculated
chemotherapy toxicities
-adverse effects are major drawbacks
-rapidly dividing cells such as hair, GI cells and bone marrow
emetic potential
the likelihood that a drug will produce vomiting
tumor lysis syndrome
-chemo destroys good and bad cells
-uric acid in blood following lysis- causes joint pain and neuropathy
-use gout meds like allopurinol
antineoplastic meds
cell cycle specific drugs
-treat solid or circulating tumors
-there are different classes
antimetabolites
neoplastic med
-CCS analogues antagonize actions of metabolites
-trick cancer cells into using their drug and not what they need
-work in S Phase
-folate, purine and pyrimidine antagonists
folate antagonists
inhibits the conversion of folic acid to folate which is needed for DNA synthesis
purine antagonists
purine bases inhibits synthesis of DNA and rna
pyrimidine antagonists
pyrimidine bases inhibits synthesis of DNA and rna
antimetabolites indications
-low dose matinence and palliative cancer therapy
-psoriasis ad RA
mitotic inhibitors
antimetabolites
natural products obtained from the periwinkle or mandrake plant
-work in various phases of the cycle
-kaposi sarcome, lung cancers
alkaloid topoisomerase 2 inhibitors
antimetabolites drug
-treat small cell lung cancer and testicular
-significant toxicities so not used much
-etoposide
topoisomerase 1 inhibitors
-treat ovarian and colorectal cancer
-derived from Chinese shrub
antineoplastic enzymes
-synthesized using cultures of bacteria and dna technology
-resulting in enzyme production
-ex: asparaginase
-treat acute lymph leukemia
adverse: pancreatic, dermatologic, hepatic and cardio effects
cell cycle non-specific drugs
-alkylating drugs
-cytotoxic antibiotics
alkylating drugs
-prevent cancer cells from reproducing
-alter dna
-use combo drugs to treat cancer
side effects: ototoxicity, peripheral neuropathy
-ex: cisplatin (solid tumors)
cytotoxic antibodies
-produced by streptomyces
-block dna synthesis
-bone marrow suppression
-bleomycin, daunorubicin, doxorubicin
-treats solid tumors
bevacizumab
blocks blood supply to the growing tumor
nephrotoxicity
hydroxyurea
-action similar to antimetabolites
-treat squamous cell carcinoma and leukemia
-nephrotoxic
hormonal drugs
treat variety go neoplasms in men and women
block the boys sex hormone receptors
used as adjuvant and palliative therapy
nursing implementations
-assess baseline blood counts before antineoplastic drugs
-monitor for myelosuppression (all blood stuff)
oncologic emergencies
-infections
-pulmonary toxicity
-allergic reactions
-stomatitis with severe ulcerations
-bleeding
-metabolic aberrations
-bowel irritability with diarrhea
-renal, liver and cardiac toxicity
hematopoietic drugs
decrease the duration of chemotherapy-induced anemia, neutropenia, and thrombocytopenia
protooncogenes
normal genes that regulate cell processes. carcinogens cause them to function as oncogenes. (good until cancer gets it)
tumor suppressor genes
suppress cell growth. carcinogen can make them inactive
initiation stage of cancer
first stage
mutation of cells genetic structure
-if damaged cell docent die or repair before entering cycle, it will be replaced with same alteration
promotion stage of cancer
reversible proliferation of altered cells
activities that are reversible are- obesity, smoking, drinking, etc.
latent period
amount of time on the initiation and promotion stage
main sites of metastasis
brain, lung, liver, bones
sentinel lymph node
the lymph node that is closest to the tumor that must be cut out for biopsy
cytotoxic T cells
kills tumor directly
produce cytokines that stimulate all other cells
natural killer cells and activated macrophages
can lyse tumor cells
B cells
make antibodies that bind to tumor cells
oncofetal antigens
type of TAA that are present when the tumor cell has shifted back to a more immature differentiation, serves as a tumor marker
encapsulated?
benign- usually
malignant- rarely
differentiated?
benign- normally
malignant- poorly
metastasis?
benign- absent
malignant- capable
recurrence?
benign- rare
malignant- possible
vascularity?
benign- slight
malignant- moderate to marked
mode of growth?
benign- expansive
malignant- infiltrative and expansive
cell characteristics?
benign- fairly normal, like parent cells
malignant- calls abnormal, become more unlike parent cells
carcinomas
originate from skin, glands (ectoderm)
sarcomas
originate from connective tissue, muscle, bone and fat (mesoderm)
lymphomas and leukemia
originate from hematopoietic system
grade 1 classification
cells differ slightly from normal cells (mild dysplasia) and are well differentiated (low grade)
grade 2 classification
cells are more abnormal (moderate dysplasia) and moderately differentiated (intermediate grade)
grade 3 classification
cells are very abnormal (severe dysplasia) and poorly differentiated (high grade)
grade 4 classification
cells are immature, primitive (anaplasia) and undifferentiated, cell of origin is hard to determine (high grade)
TNM classification system
-tumor size and invasiveness
-spread of lymph nodes
-metastasis
stage 0 cancer
cancer in situ
stage 1 cancer
tumor limited to tissue origin, localized tumor growth
stage 2 cancer
limited local spread
stage 3 cancer
extensive local and regional spread
stage 4 cancer
metastasis
cancer diagnostic studies
-radiographic studies
-radioisotope scans
-PET scan
-tumor markers
-genetic markers
-cytology studies
-chest x-ray
-CBC
-liver function studies
-endoscopic examination
7 warning signs of cancer
C- change in bowel or bladder habits
A- a sore that won’t heal
U- unusual bleeding or discharge
T- thickening or lump
I- indigestion or difficulty swallowing
O- obvious change in wart or mole
N- nagging cough or hoarseness
what is the only way to diagnose cancer?
pathologic evaluation of a tissue
oncologic emergencies
-super vena cava syndrome
-spinal cord compression
-third space syndrome
-hypercalcemia
-syndrome of inappropriate anti-diuretic hormone
-tumor lysis syndrome
-cardiac tamponade
-carotid artery rupture
UVA
tanning
UVB
burning
non melanoma skin cancers
-actinic keratosis
-basal cell carcinoma
-squamous cell carcinoma
actinic keratosis
-most common precancerous skin lesions
-older whites
-impossible to tell from squamous cell cancer
-rough adherent scale on red base, which returns when removed
-topical fluorouracil
basal cell carcinoma
-most common skin cancer
-least deadly
-sun exposed areas
-pearly, ulceration, depressed center, red and elevated
-fluorouracil
-slowest growing cancer
squamous cell carcinoma
-aggressive and can metastasize
-sun exposure and immunosuppression after organ transplant
-scaly, plaque, lesion with horn
melanoma
-causes most skin cancer deaths
-metastasize to brain and heart
-sentinel lymph node evaluation
malignant melanoma diagnosis
-dermoscopy
-excisional biopsy
-tumor thickness
atypical/ dysplastic nevus
-larger than usual- irregular boarders, different colors
-increased risk of developing melanoma
-should be looked at immediately
bacterial infections
staphylococcus aureus, impetigo, cellulitis, furuncles
viral infections
herpes simplex, herpes zoster, warts
infestations and insect bites
ticks and scabies
fungal infections
candidiasis, tinea
cutaneous drug reactions
-SJS
toxic epidermal necrolysis
-occur 4-21 days after use of drug( antibiotics, NSAIDS, seizure and retroviral drugs)
seborrheic keratosis
benign, familial tendency
brown moleish things
nevi
moles
acrochordons
skin tags
inter professional care for derma problems
-phototherapy uv light
-radiation therapy
-laser technology
-drug therapy
topical dermatological drugs
-antimicrobial
-antiinflammatory
-intineoplastic
-antipruritic
-burn drugs
Candida albicans
yeastlike opportunistic fungus present in normal flora of mouth, vagina and intestinal tract
dermatophytes
tinea or ringworm infections
topical antipruritic drugs
-antihistamines
-corticosteroids
adverse: acne, allergic dermatitis, burn, dry, atrophy skin, swollen face, alopecia, etc.
meds for psoriasis
begins with topical corticosteroids
-tar-containing products were first meds to be used