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how is cancer characterized?
by cells that multiple rapidly, are uncontrolled and invade normal tissue
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Tumors grow because that lack____
contact inhibition
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what is a benign neoplasm
non cancerous abnormal growth that is non recurrent
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what is malignant neoplasms
cancerous abnormal growths that grow exponentially until cells break off leading to metastasis.
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how big do cancerous tumors have to be before detection?
1cm or 1/2 inch
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describe a benign tumor
slow growing localized mass that typically are encapsulated. They are movable and have well defined edges. They rarely reoccur and arent life threatening
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describe a malignant tumor
rapidly growing mass that invades surrounding tissue or travels to distant organs. The mass is rarely encapsulated and has irregular borders and is immovable. Cells cant be readily identified as to the tissue or origin and they commonly reoccur. Are fatal if not treated
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Do malignant tumors alter the function of the target organ?
Yes. like lung cancers cause SOB and coughing. The cancer prevents normal functioning
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What is metastasis?
spread of a tumor from the primary site to a different part of the body
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what is "In Situ"
means tumor is contained in one area/ localized.
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what causes Metastasis to occur?
- cancer invades the blood or lymph vessels
- moved by mechanical means (cells accidentally transplanted during surgery)
- cancer lodges and grows in a new location by directly extending into surrounding tissue
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Describe cancer
the mutation of cellular genes leads to abnormal cell growth and the lack of inhibition of the division of cells caused by contact with other cells
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What causes cancer
- carcinogen exposure
- initiation: normal cells are altered or damaged
- promotion: repeat exposure to carcinogens cause cell mutation
- progression: further genetic mutation occurs
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risk factors for cancer
- Oncoviruses
- radiation
- chemicals
- irritants
- genetics
- diet
- hormones
- immune factors
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what diet can lead to cancer
high fat; low fiber
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______is the top killer of men and women
lung cancer
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what is a carcinoma
- most common type of cancer that affects the skin and organs with linings. its composed of rapidly dividing cells.
- (ex: lungs, colon)
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What do sarcomas affect?
blood, bone, cartilage, and adipose tissue
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what does leukemia affect
bone marrow
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what does lymphoma affect
lymph nodes and spleen
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what does a melanoma affect
- cells that produce skin pigment
- (melanin= melanoma)
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what are the most common types of cancer in men?
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what are the most common types of cancer in women
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How do you prevent cancer
- Early detection
- screening
- genetic testing
- healthy lifestyle
- vaccines
- protectant foods
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what kinds of food increase risk for cancer?
pickled and smoked foods
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how is cancer diagnosed?
- biopsy
- radiological studies
- labs (tumor markers psa and cea; increased calcium)
- Nuclear imagine
- ultrasounds
- endoscopy
- cytological study
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what is PSA
tumor markers for prostate cancer
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what is CEA
tumor marker for colon cancer
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describe Stage 1 cancer
- cells are confined to tissue of origin with no sign of mets.
- Tumor In Situ
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Describe Stage 2 cancer
limited spread of cancer to local area; generally to lymph nodes
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Describe Stage 3 cancer
Large tumor; probably has invaded surrounding tissues
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Describe Stage 4 cancer
cancer has metastasized
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Describe the numerical chart for staging cancers
- tumor (size) : 1-4 range. 1= small 4= extra large
- nodes (involvement) : 0-3 0=none 3=large amount
- metastasis : 0-1 0=none 1=some
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Describe surgery options for cancer
- curative- tumor can be removed
- pallative- done only to help pain and control symptoms
- prophlyactic- removes areas before cancer growth (ex:breasts, moles)
- Reconstructive
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describe internal radiation
- radiation is admitted inside the pt allowing for higher dose to affected area while reducing destruction of surrounding area.
- have to use safety precautions while pt is being treated.
- All secretions are radioactive.
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describe external radiation
Radiation beams destroy cancer cells with minimal damage to normal healthy cells.
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What is Unsealed Internal radiation?
radiation given po or iv
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what is sealed internal radiation
radiation is deposited as "seeds" that radiologist insert and remove from cavities. it delivers specific amounts of radiation over hours or days
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Safety precautions for handling pts with internal radiation
- time: plan ahead. Nurses may spend less than 1 hour exposed to radiation over an 8 hour shift. provide activities for pt bc they isolated.
- distance: stand as far away as possible
- shielding: wear lead apron if in close contact or prolonged exposure
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Safety consideration for pts with internal radiation
- visitors are limited to 10 minutes exposed to pt
- pt on strict bed rest to prevent dislodgment of seeds
- proper signage on door
- do not bath pt below waste if vaginal radiation; keep legs closed
- low residue diet to slow bm
- force fluids
- foley cath to keep bladder from absorbing radiation
- hob 30-45 degrees MAX
- TED hose for bed rest
- *long handled forcepts and lead container in case of seed dislodging* no touchy
- check position of applicator by assess threads attached externally
- call radiologist if seed falls out
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Pts are no longer radioactive after______ with internal rad
removal
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s/e of radiation
- fatigue
- nausea, vomiting, anorexia
- mucositis (inflammation of MM)
- xerostomia (dry mouth)
- skin reactions (red blistering)
- bone marrow depression
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With external radiation pt is________
not considered radioactive
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treatment with external radiation usually lasts____
5 minutes
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Considerations for external radition
- skin markings should not be removed
- use water based lotions bc radiation is drying to skin
- bath with mild soap
- avoid lying on affected side or area and other irritants.
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what is the action of chemo?
- affects cells that rapidly divide and reproduce (gi, oral, hair, bone marrow)
- All malignant cells must be destroyed for cancer to be cured
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how is chemo administered?
po, iv,im, topical
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pts receive better results with _____ therapy vs single agent therapy
combination
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How often is chemo typically given?
every 3 week to allow for blood counts to regrow.
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Each class of chemo does what?
attacks cells in a specific phase of reproduction
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s/e of Adriamycin?
- Red Urine** pt teaching
- loss of hair
- n/v
- cardiac damage
- is a vesicant drug** destroys tissue if it infiltrates
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s/e of Taxol?
hair loss, neuropathy, muscle aches
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S/e of Cisplatin?
Difficulty hearing, rigging of ears
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s/e of Bleomycin?
Sob/ cough/ pulmonary fibrosis
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What do you watch for when giving Erythropoietin
increased Bp
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what does erythopoietin do?
- (Epogen,Epoetin Alpha, Procrit)
- stimulated RBC production
- erythrocytes=rbc
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what does Interleukin 11 do
- (Neumega)
- stimulates platelet production
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what does gm-csf do?
- Leukine (sargramostim)
- stimulates WBC
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what does G-CSF do?
- (Neupogen,neulasta)
- stimulates wbc production
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S/E of chemo-blood
Bone marrow depression** occurs 7-10 days after chemo
Leukopenia (low wbc)- avoid fresh fruit bc bacteria in pectin
thrombocytopenia (low platelets) *monitor pts with <20 bc spontaneous bleeding; pts with <50 for falls/injury
anemia
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Pt teaching related to N/V/D with chemo
- small frequent meals
- fluids between meals
- *bland diet*
- avoid greasy, spicy or stinky foods
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Describe stomatitis in relation to chemo therapy
- inflammation of mouth
- medicate for pain
- avoid hot or cold liquids, citrus, alcohol or smoking, spicy food, and mouth wash (all that is gonna cause pain)
- preform mouth care
- use mouth wash of baking soda, salt, and water or benadryl and water**
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describe Alopecia in relation to chem
- starts 10-21 days after first chemo
- always inform pt of this side effect
- hair loss is temporary
- could fall out slowly or in large clumps
- ice caps could help by freezing follicles
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describe sepsis in relation to chem
- Always significant risk with bone marrow depression
- report temps of 101 or more
- prophylactic antibiotics and drugs to raise WBC
- possible hospitalization
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Describe reproductive alterations associated with chemo
- decreased sex drive
- painful intercourse (vaginal and intestinal lining is being killed off)
- erectile dysfunction
- infertility
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Describe neurotoxicity in relation to chem
- "chemo fog"
- memory lapses
- trouble concentrating
- unable to remember details or multi-task
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Restrictions related to chemo pts
- limit contact with others if severe neutropenia
- avoid injury or trauma with thrombocytopenia
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Considerations for chemo
- higher the dose the worse the symptoms
- treatment is based on adequate lab values- withheld if blood counts are too low
- ANC = wbc x segs. if neutrophil count is less than 2000 hold treatment
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Precautions for preping chemo drugs
- strict guidelines for mixing agents
- must wear gloves and gowns
- wash hands before and after mixing
- double and triple check for accuracy
- prevent spills
- if spills occur use special clean up kit for biohazards only*****
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what does BITES mean
- B: bleeding- low plt
- I: infection- low wbc
- t: tiredness- anemia
- e: emesis -nutrition and electrolyte imbalances
- s: skin changes- radiation reaction or break down
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Pt teaching for Chemo
- no OTCs without approval
- never increase, decrease, or omit dose of chemo without approval
- assess mouth daily
- drink fluids 8-10 cups
- keep all apointments
- alcohol in moderation
- no invasive procedures without prior approval
- have blood checked as order, on time!!
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Describe hospice for cancer pts
- less than 6 mo prognosis
- inpt
- outpt
- keep pt comfy
- all curative treatments stop
- promotes comfort and quality of life
- pt may go through the stages of grieving or death (denial, anger, bargaining, depression, acceptance)
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Superior Vena Cave Syndrome in relation to cancer pts
- Most common in pts with lung cancer
- tumor grows and blocks the vessel
- s/s: high pitched voice, edema of head and neck, maybe seizures
- hospitalization needed with radiation and drugs to shrink tumor
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spinal cord compression in relation to cancer pts
- occurs in pts with bone mets to spine
- s/s: lower back pain and loss of use of legs
- mri used to rule out compression
- radiation to relieve compression
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Hypercalcemia in relation to cancer pts
- most common in pt with bone mets
- s/s: calcium over 11 (5.3-8.) is normal, confused and disoriented
- treatment is Aredia and Zometa- decrease calcium in blood . calcitonin injection given at home.
- check calcium levels daily
- too high calcium can cause a coma
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