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what is a communicable disease
illness that is directly transmitted (acquired from person or vector) by contact with body fluids, or indirectly transmitted by contact w a contaminated object
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what is an infectious disease
any communicable disease caused by microorganisms that are commonly transmitted from one person to another or from an animal to a person
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what three factors must be present for a communicable disease to occur
- -infectious agent, pathogen
- -effective means of transmission or spread of the infectious agent
- -a susceptible host
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what is passive immunity?
-antibodies produced in another human
ex: mother passes antibodies (proteins capable of responding to specific infections) to the fetus during third trimester by the placenta an d to the newborn through breast milk...decreases in newborn in months after birth
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Why are infants/children vulnerable to disease
-preterm receive fewer maternal antibodies
- -immunity decreases in the months after birth
- -immunodeficiency and poor health
- -poor hygiene behaviors (fecal-oral & respiratory route most common
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what is active immunity?
infants/children develop active immunity with antibody development for specific infections through immunization or exposure to the natural disease through contacts with other children and adults
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what are steps nurses can take to prevent the spread of disease
- -wash hands, hand sanitizer
- -separate quarantine from well
- -promote/provide immunizations
- -eliminate habitat for reservoir of the host
- -kill pathogen (sanitize toys)
- -educate children and parents
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what is a killed virus vaccine
vaccine contains a microorganism that has been killed but is still capable of inducing the human body to produce antibodies.
exp: inactivated poliovirus vaccine
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What is a toxoid?
a toxin that has been treated (by heat or chemical) to weaken its toxic effects but retain its antigenicity
exp: tetnus toxoid
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what is a live virus vaccine?
a vaccine that contains a microorganism in live but weakend form.
Exp: measles and varicella vaccines
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what is an acellular vaccine?
a vaccine that uses proteins, such as from pertussis, rather than the whole bacterial cell to stimulate the process of active immunity
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What are recombiant forms?
an organism that has been genetically altered for use in a vaccine
Exp: hepatitis B and acellular vaccine
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what are conjugated forms of vaccines
al altered organism joined with another substance to increase the immune response
Exp: the haemophilus influenzae type b (Hib) vaccine in conjugated with a protein carrier like tetnus toxoid, but no immunity to tetanus occurs when it is the protein carrier
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what are some responses a child might have to a vaccine
Local: erythema, swelling, pain, and induration at the site of the injection
Systemic: fever, fussiness or irritability, malaise, anorexia, rash
Allergic: epinephrine 1:1000 (0.01 ml/kg IM)
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what is full immunization defined as:
- -4 doses of DTP/DT/DTaP
- -3 doses of IPV, Hib, HepB
- -1 dose of MMR and varicella
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What are some common misconceptions about vaccines?
- -vaccine-preventable diseases have been eliminated
- -immunization weakens the immune system or overload system causing harmful effects
- -it would be better to let the child get the disease than get immunized
- -vaccines do not work, children still get the disease
- -vaccines may cause serious conditions such at autism
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what are some guidelines to reduce the number of missed opportunities to administer immunizations
- -use combination injections
- -educate staff to review childs record
- -send reminders to parents
- -schedule childs next immunization visit prior to them leaving the office
- -immunizations can be given when child is sick
- -give several vaccines at same visit; 2 injections in 2 different sites on the same extremity
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what is the nurse required to record when giving immunizations
- -date
- -vaccine
- -manifacturer
- -lot # & expiration
- -site & route
- -name title and address of person who administered
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how can the nurse reduce pain and anxiety for the patient and parent
-coach parent ot hold and talk to child during shot
-infants up to 4 months of age, give 24% sucrose water to suck immediately beofre injection (reduce pain); then allow to suck on pacifier or breastfeed during injection
-apply pressure at injection site for 10 secs prior to injection
-use vapocoolant spray
-give two injections simutaneously
-parent comforts after
-age appropriate distractions
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what is the path and purpose of a fever in response to communicable disease?
- -fever is increased body temp of 38 C (100.4F) taken rectal or oral
- -endogenous pyrogens are released in response to invaders
- -they travel to hypothalamus and trigger porduction of prostagladin E which raises body temp causing fever to occur
- -this leads to cold response with chills and shivering, vasoconstriction, decreased peripheral perfusion
- -body temp rises, then vasodilation occurs and the skin flushes becoming warm to touch
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what is toxic appearance with a fever?
- -lethargy
- -poor perfusion
- -hypoventilation or hyperventilation
- -cyanosis
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what children may be at greater risk for serious illness in association with a fever
- -infants and children that have a toxic appearance
- -neonates < 28 days old w temp over 100.4 (38c)
- -children < 4 w temp over 105.8 (41c)
- -children with sickle cell, shunt, CHD
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how does a nurse manage a fever
- -pospone treatment of low grade under 102, to promote natural defenses
- -antipyretics-acetaminophen/ibprofen (no asprin b/c of Reye syndrome)
- -limit clothing
- -monitor temp
- -clear fluids
- -finish all antibiotics
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chicken pox (varicella virus)
- -direct contact
- -contagious until lesions crusted over
- -incubate 14-21 days
- -airbourne and contact percaustions
- -acteminophen/ibprofen
- -benadryl
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Diphtheria
- -occurs in colder months
- -grey pharyngeal membrane
- -antibiotic for 14 days
- -emergency airway equiptment
- -sore throat and enlarged lymphs
- -contagious for 2-4 weeks or unti l4 days after antibiotics are started
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Enteroviruses (coxsackie virus)
- -summer, early fall
- -poor hygiene, overcrowding
- -fecal, oral droplet
- -incubate 3-6 days
- -viral shedding may occur weeks or months after infection onset
- -hand foot and mouth disease 7-10 days
- -hand hygiene
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Fifth disease (erythema infectiosum)
- -human parvovirus
- -worldwide winter and spring
- -epidemics q 3-7 years
- -children 5-14
- -respiratory and blood transmission
- -incubation 4-21 days, rash for 7-10 days
- -"slapped face"
- -antiyretics, oatmeal bath, benadryl, keep out of sunlight
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haemophilus B
- -spring and summer
- -contagious for 3 days
- -uppper respiratory infection, can enter blood stream
- -iv antibiotics for 10 days
- steroids, rifampin for exposed family (orange urine)
- -antipyretics
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influenza
- -oct-march in USA
- -community outbreaks 4-8 weeks
- -H1N1, H1N2 new strains
- -abrupt onset
- -N/V/D
- -incubate 2 days
- contagious for one week
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measles
- -incubate 8-12 days, contagious 3-5 days before rash and 4 days after
- -children very ill,, rash, treatment is upportive, death 1-3:1000
- -airborne percautions
- -antpyretics
- -klopik spots
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meningococcus (menegitis)
- -winter and early spring
- -incubate 2-10 days
- -contagious until 24 hours after antibiotic
- -spetic shock, DIC Gangrenous necrosis, respiratory compromise
- -spinal tap
- -Iv antibiotics 5-7 dyas
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mononucleosis
- -esptein barr virus
- -Incubate 30-50 days
- -supportive treatment
- -steroids for pharyngeal swelling
- -avoid contact sport for 4 week d/t liver and spleen elargemnt
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Mumps
- -incubation12-25 days
- -swollen glands, contagious 7 days prior to swelling and 9 days after
- -analgesics and antipyretics
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Pertussis (whooping cough)
- -pertussis or vaccine is long lasting
- -barrowed glottis causes stridor or whooping
- cough and respiratory symptoms last 3-9 weeks
- -supportive treatment and antibiotics
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Pneumoncoccal
- -nasopharynx
- -unknown incubation, contagious unknown
- -standard precautions, antipyretics
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Poliomyelitis
- -all cases under 5 year old
- -contagious 3-6 weeks ecreted feces
- -incubation 7-10 days
- -sore throat low grade temp
- -asymmetric flaccid paralysis
- -aseptic meningitis and paresthesias
- -supportive treatment
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roseola (6th disease)
- -human herpevirus
- -6-24 months
- -saliv and respiratory secretions
- incubated 9-10 days
- -contagious
- -fever 3-7 days
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rotavirus
- -most common cause of severe diarrhea in children under 5 year old
- -incubate 24-72 hour
- -fecal oral route
- -virus found in stool for up ot 30 days
- 10-20 diarrhea stool a day
- -lasts 3-8 days
- -fluid and electrolyte replacement
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Rubella
- -incubates 14-23 days
- -contagious a few days before
- -mild disease
- -tx is supportive
- -infection during 1st trimester=congenital defects or fetal death
- -children shed virus for 1 year
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Streptococcus A
- -incubation varies
- -spread by contact with pharyngitis or skin lesion
- -pharyngeal, respiratory tract, scarlet fecer, pyodermal (impetigo)
- -rapid strep antigen test
- -antipyretics
- -gargling
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Tetanus
- -bacillus spore
- -soil dust and animal excretions
- -puncture wounds, burns broken skin
- -not contagious
- -spasms, mortaility in infants
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what are some diseases that are transmitted by animal hosts
malaria-mosquito
rabies infected saliva from animals
rocky mountain spotted fever-tick bourne
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what is Disseminated Intravascular Coagulation (DIC)
-condidtion in which blood clots form throughout the body's small blood vessels.
-blood clots reduce/block blood flow thorugh the blood vessels, which can damage body organs
-increased clotting uses up platelets and serious bleeding can occur (internal and external)
-symptoms include petechiae or pupura
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