Week 5: Oncology Part 2 - FOR 362 NOT 363 Flashcards
What is radiation therapy
use of high energy ionizing rays or particles to treat cancer
destroys ability of cancer cells to grow and multiply - cell cycle interruption
Radiation therapy can be ___ or ___
external or internal
How often is radiation therapy administered usually
usually administered daily for 5 days with a 2 day “holiday” for 2-8 weeks
treatment planning is extensive
Radiation Dosimetry
radiation dose being determined by mesurement, calculation or a mix of borth
IMRT
intensity modulated radiation therapy - external
delivers high dose radiation to a tumor while sparing vital healthy tissues around the tumor
The beam can mold to the tissues shape and bombard the tumor with small beans of different intesities from all sides
Bracytherapy
Internal radiation therapy
Radioactive substances like unsealed or sealed sources deliver large amounts of radiation to a specific area over a short time
Example of Brachytherapy
Prostate Seeds
Unsealed Brachytherapy Sources
liquid radiation
Sealed Brachytherapy Sources
Implants - needles, seeds, wires
Types of Cancer that respond well to Radiation therapy
lymphoma
leukemia
squamous cell cancers of oropharynx, glottis, bladder, skin, prostate
breast cancers
adenocarcinomas of the ailmentary tract
Radiation Safety Measures
radiation madge
minimize exposure
care - limit time, distance to radiation exposure (6 feet), shielding (lead shield)
monitoring implant placement (sealed sources) every 4-6 hours –> if found, long handled forceps into a lead lined container
no one under 18 or pregnant visiting the radioactive implant pt
mark client room with radiation precautions
body secretions considered contaminated
pt vomitting within the first 4 hours –> everything vomit touches is contaminated
use of disposable gowns, dishes, etc
visitors limited to 1 hour/day and must keep distance from pt
Radiation Safety Measures are important in what time period of sealed source implants
24-72 hours
Common effects of radiation therapy can be what?
acute, sub acute or late
Common effects of radiation therapy
impaired skin integrity
risk for infection r/t skin breakdown - erythema, dry and wet desquamation
activity intolerance and fatigue
altered nutrition less than body requirements r/t anorexia
bone marrow suppression - r/t irradiation of areas with large volumes of production
What are common R Therapy effects in the head and neck
Stomatitis/Mucositis
Xerostomia
Tooth decay and caries
osteoradionecrosis
What are common R therapy effects in the brain/scalp
alopecia - hair texture - color changes
cerebral edema
What are common R therapy effects in the pelvis
diarrhea
cystitis
ED
sexual disorders
What are common R therapy effects in the abdomen
N and V
WHat are common R therapy effects in the chest
cough
esophagitis
radiation pneumonitis
Nursing assessment wants to look at what for a pt with radiation therapy
note skin in field of radiation
monitor labs for neutropenia
Important topics of education for pt.s in radiation therapy
equipment, length of treatment
good skin and oral care
safety concerns with implants
Chemotherapy
antineoplastic agents used to kill tumor cells by interfering with the cell cycle
Immunotherapy
“Biotherapy”
use of agents derived from biologic sources or agents that enhance immune system to kill cancer cells
How does immunotherapy kill cancer cells
enhance the immune response, modify actions of the cells, and icnrease vulnerability of the cells
ex: Cytokines, monoclonal antibodies
Targeted Therapy
most intesnive/scientific
molecular based therapies that target receptors, proteins, transduction pathways to prevent growth of cancer cells
Chemotherapy Types/Routes
Oral, SQ, IM
Topical
IV (Peripheral, central lines)
Intra arterial
Intra cavity
Intra peritoneal
Intrathecal
CVA (Chemo)
Central Venous Access
Extravasation
the leakage of blood, lymph, or other fluids like anti cancer drugs from a blood vessel or tube into the tissue around it
It is a complication from a vesicant leading to blistering
What is the fundamental of safe administration of chemotherapy
safe handling! !!!
consider any chemo/bio drug to be HAZARDOUS TO YOUR HEALTH - so minimize exposure
Routes for Chemo Administration
absorption
injections
inhalation
ingestion
What sort of PPE is used for chemo?
Gloves - powder free and tested with chemo agents - double gloving recommended for prep and waste handling
gowns - low permiability fabric with a solid front
respirators - if any aerosol risk
eye or face protection if splash potential
Chemotherapy adminsitration situations requiring PPE
introducing or withdrawing needles from vials
transferring drugs form vials to other containers suing needles or syringes
opening ampulse
adminsitering drugs by any route
spiking, priming IV tubing
handling leakages
handling bodily fluids of someone who has received agents in the last 48 hours
Nursing assessment areas for clients receiving chemo/bio agents
patient concerns and questions
support systems
coping
nutritional status
CBC and other chemistries
infusion site and CVAD care!!!!!!
Education areas for the nurse to convery for pts receiving chemo or biotherapy
side effect onsets and durations
how to manage the side effects at home
recognizing emergency situations
how to manage CVAD
Common SE of Cancer that needs nursing management
alopecia
anorexia
diarrhea or constipation
fatigue
myelosuppression
mucositits (other places in addt to oral)
cardiac toxicity
hypersensitivity rxns
lyte disturbances (hypercalc, hypergly, hyper kal, hypernat, hyperuricemia, hypomag, hypocalcemia)
When does alopecia usually start after chemotherapy and radiation therapy and when can regrowth begin
beings 2-3 weeks post initiation but can regrown as often as within 8 weeks after last treatment
Nursing Diagnosis for Alopecia
alteration in body image r/t alopecia
Nursing interventions for Alopecia
mild, protein based shampoos, cream rinse and conditioner
avoid hair dryers, curling irons, bobby pins
wrap or turban to keep head warm
sunscreen scalp if needed
How soon can skin breakdown begin in chemo patients
as soon as 2 weeks into radiation therapy, it is dose dependent
Nursing Diagnosis for Skin Breakdown from Radiation therapy
Actual or Risk for Impaired Skin Integrity
Risk for infection r/t skin breakdown
Nursing Interventions for Altered Skin Integrity / Skin Breakdown
Assess skin integrity
Minimize trauma and protect the skin
If skin with dry breakdown - hydrophilic moisturizing lotion (aquaphor)
If skin weeps - apply non adhesive absorbent dressing
After treatment - protect skin, sunblock
Consult wound ostomy continence nurse
Nursing Diagnosis for Oral Care Issues (Mucositis or Stomatitis)
Mucositis or Stomatitis r/t Chemo or Radiation therapy