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HIV/AIDS
concept book
143
Nursing
Not Applicable
06/01/2024

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Term
Significant concentrations of HIV are present in
Definition
blood, semen,preseminlal fluid, rectal fluid, baginal and cerviacl secretions and cerbrospinal fluid of infected individuals
Term
ON entry into the body, the HIV virus infects cells that have the
Definition
CD4 antigen
Term
Once inside the cell, HIV sheds its protein coat and uses and enzyme called _ to convert the viral _ to _
Definition
revers transcriptase; RNA, DNA
Term
although the virus may remain inactive in infected cells for years, antibodies are produced to its protiens, a process known as
Definition
seroconversion
Term
antibodies of HIV are usually detectable _ after the initial infection
Definition
6 weeks to 6 months
Term
Healthcare workers can prevent most exposures to HIV by using
Definition
standard precaustions
Term
an approved prep therapy for all adults and adolescents
Definition
turvada
Term
an approved prep therapy for some adults and adolescents because the effective ness of this medication has not been evaluated in those at reisk for HIV through receptive vaginal sex
Definition
descovy
Term
a combination of tenofovir disoproxil fumarate and emrtricitabine
Definition
truvada
Term
a combination of emtricitabine an tenofovir alafenamid
Definition
descovy
Term
truvada and descovy work by blocking important pathways that _ uses to set up an infection
Definition
HIV
Term
PEP needs to being within _ of an exposure and consists of two to three antiretroviral medications that must be taken for _
Definition
72 hours, 28 days
Term
Typical manifestations of HIV include
Definition
fever, sore throat, arthralgia and myalgias, headach, rash and lympadenopathy, nausea/vomiting, abdominal cramping
Term
patients of attribute initial manifestations of HIV infection to a common viral illness such as
Definition
influenza, upper respiratory infection or stomach virus
Term
The lenght of asymptomatic period for HIV varies from
Definition
8 to 10 years
Term
Some patients with few other symptoms following HIV infection develop
Definition
persistant generalized lympadenopathy
Term
enlargment of two or more lymph nodes outside the ingenunal change with no other illness or condition to account for the lymphadenopathy
Definition
persistent generalized lympadenopathy
Term
the move from asymptomatic disease or persistent lympadenopath to AIDS often is not clearly defined, however the patient may complain of
Definition
general malaise, fever, fatigu, night sweats, involuntary weight loss, persistent skin dryness, rash, diarrhea, oral lesions such as hairy leukoplakia, candidiasis, gingival inflammation and ulceration
Term
the development of advanced HIV occurs between _ after initial infection
Definition
10 to 15 years
Term
Characteristic manifestations fo AIDS are the develpment of significant _ (very poor prognosis at this stage)
Definition
constitutional disease, neurologic manifestations, opportunistic infections or cancers
Term
Stages of HIV are defined by the severity of infection as determined by
Definition
t lymphocyte count, percentage of toal lymphoctyes or the presence of an AIDS-defining condition
Term
When t lymphocyt counts fall below _, ty lymphocyte percentage falls below _ or an _ condition is documented the patient has _
Definition
200, 14%, aids defining, stage 3 HIV or AIDs
Term
the most common cause of changes in mental status for patients with HIV infection
Definition
AIDS dementia complex
Term
manifestatiosn of AIDS dementia complex
Definition
fluctuating memory loss, confusion, difficulty concentrating, lethargy, diminished motor speed
Term
as the AIDS dementia complex progresses the patient develops sever dementa with motor disturbances such as
Definition
ataxia, trmeor, spasticity, incontinenc and paraplegia
Term
space occupying lesions
Definition
toxoplasmosis, non hodgkin lymphoma
Term
toxoplasmosis and nonhodgkin lymphoma are space occupying lesions that may cause
Definition
headache, altered mental status, neurologic deficits
Term
_ are also common in patients with aids
Definition
cryptoccoal meningitis
Term
one of the most common forms of peripheral neuropathies related to HIV
Definition
distaly symmetric ply neuropathy
Term
DSP manifests as
Definition
aching, tingling, burning, or stabbing sensations in the lower extremitis
Term
DSP
Definition
distal symmetric polyneuropathy
Term
the most common manifestations of AIDS and ppatients may eoften have multiple infections
Definition
opportunistic infections
Term
the normal CD4 count is greater than
Definition
1000
Term
when the CD4 count falls below _ manifestations of immunodeficiency develop
Definition
500 mm
Term
caused by a common enviornmental fungus that is not pathogenic in patients with intac immune systems
Definition
pjp
Term
the most common opportunistic infection affecting patients with AID
Definition
PJP
Term
PJP
Definition
pneumocystis jiraveci pneumonia
Term
patients with pjp often present with
Definition
fever, nonproductic cough, dyspnea, tachypnea and tachycardia, mild chest pain, (with progression of disease) respiratory distress and cyanosis
Term
a common fungal infection in patients with AIDS
Definition
candidiasis
Term
candidiassi usually manifests as
Definition
oral throush or esophagitis
Term
presents a s white, firable plaques on the buccal mucosa or tongue and in the patient with HIV infection, is the first inidcation of progression to AIDS
Definition
oral thrush (candidiasis)
Term
MAC occurs when CD4 counts are less than
Definition
50 mm3
Term
MAC is commonly found in
Definition
food, water and soil
Term
MAC is a major cause of
Definition
wasting syndrome
Term
manifestations of MAC
Definition
chills, fever, weakness, night sweats, abdonminal pain, diarrhea, weight loss
Term
most people with MAC develop
Definition
disseminated disease
Term
cytomegaloviros can affect the
Definition
retina, GI tract or lungs
Term
toxoplasmosis occurs as
Definition
encphalitis or intracerbal mass lesion
Term
_ may result from toxoplasmosisis
Definition
changes in mental sttus, focal neurologic signs and seizures
Term
cryptococcus infecton may present as either _ or disseminated diseas primarily affecting th _
Definition
meningitis, lungs
Term
a protazoan affecting the GI tract, is an important cause of prolonged diarrhea in patients with AIDS
Definition
cryptosporidium
Term
women with AIDS have a high incidence of
Definition
pelvic inflammatory disease (PID)
Term
the CDC clasification of AIDS currently includes four cancers:
Definition
kaposi sarcoma, non-hodgkin lymphoma, primary lymphoma of the brain and invasive cervical carcinoma
Term
my progress slowly or rapidly and it is an indicator of late stage HIV disease
Definition
kaposi sarcoma (KS)
Term
the average survival time after diagnoissi of KS is
Definition
18 months
Term
Arising from the cells that line the lymph or small affecting the skin and viscera blood vessels, KS presents as _
Definition
vascular macules, papules or violet lesions
Term
common site for skin lesions r/t to KS
Definition
the faces especially tip of the noses and pinnae of the ears
Term
Common sites for visceral disease r/t to KS include
Definition
GI tract, lungs and lymphatic system
Term
IN patients with AIDS tow lymphomas are common:
Definition
nonhodgkin lymphoma and primary lymphoma of the CNS
Term
Primary lymphoma of othe CNS starts in the:
Definition
brain or spinal cord
Term
Lyphomas are usually found in the CNS but may also be found in the:
Definition
bone marrow, GI tract, liver, skin and mucous membranes
Term
common early symptoms of lymphomas affecting the cns
Definition
HEADACH AND CHANGES IN MENTAL STATUS
Term
_ dysplagia is common in women infected with HIV
Definition
cervical
Term
It is recommmended that women with HIV infection have a papanicolasu test ever _ and aggressive treatment of cervical dysplasia with _
Definition
6 month; colposcopy and ocnization
Term
most widely used screening test of rHIV infection
Definition
enzyme linked immunosorben assay (ELISA)
Term
ELISA tests for _ and does not detect the virus itself
Definition
HIV antibodies
Term
A patient may have a negative ELISA test early in the course of infection before detectable _ have develop
Definition
antibodies
Term
theses fourth generation tests can detect HIV-1 and HIV-2 as wella s group M and group O infections
Definition
combination HIV antigen and antibody tests
Term
a rapid laboratory test used to confirm a postiiv fourth generation combination assay and to distignuish between HIV-1 and HIV-2 infection
Definition
HIV-1/HIV-2 differentiation immunoassay
Term
the confirmatory test of choice over the wetern blot test, resultgs are reported in less thatn 20 minutes
Definition
HIV-1/HIV-1 differentiation immunoassay
Term
assesses a blood sample to detect the presence of HIV antibodies and is used to conferim a reactive ELISA screening test, usually takes several days to weeks to be reported
Definition
wester blot antibody testing
Term
This test looks for HIV in the blood and not the antibodies (very expensive and not routinely used for screening)
Definition
nucleic acid test
Term
these tests measure the amount of actively replicating HIV
Definition
HIV and viral load tests
Term
Levels higher than _ in the HIV viral load tests inidcated the needd for treatment
Definition
5000 to 10000
Term
antiretroviral resistance testing can be classified as either
Definition
genotypic or phenotypic
Term
genotypic assay tests are preferred due to _ for detecting mixtures of drug resistantce mutation in the HIV genome
Definition
faster relust time, lower const and greater sensitivity
Term
CBC is performed to detect _ which are often present in patients with HIV infection
Definition
anemia, leukopenia, lymphopenia and thrombocytopenia
Term
To detect possible tuberculosis infection
Definition
tuberculin skin testing
Term
Done to identify lymphomas on the brain
Definition
MRI
Term
Pharmacologic treatment of HIV disease has four primary foci
Definition
suppress the infection itself, provide prophylaxis for opportunistic infections, stimulate hematopoietic response, treat opportunistic infections and malignancies
Term
Effectiveness of HIV treatment is monitored by
Definition
viral load and CD4 counts
Term
ART genrally combines two _ with a third drug either an _ to reduce the incidenence fo drug resistance
Definition
NRTIs; NNRTI, PI or INSTI
Term
The recommended regimens for most patients with HIV infection are _ based
Definition
INSTI
Term
the six classes of drugs used in antiretroviral treatment include
Definition
nucleoside reverse transcriptase inhibitors, nonnucleoside reverse transcriptase inhibitors, protease inhibitors, entry inhibitors, integrase strand transfer inhibitors, cytochrom p-450 inhibitors
Term
inhibit the action of viral reverse transcriptase, a retroviral enzyme that atalyzes the substrates for converting and copying viral RNA to DNA sequences
Definition
NRTIs
Term
NRTIs
Definition
nucleoside reverse transcriptase inhibitors
Term
the first NRTI and the first antiretroviral agen approved for use with HIV infection
Definition
zidovudine
Term
often is given to patients with CD4 cell count less than 500 mm3 because of evidence that it slows the progression to sever disease
Definition
zidovudine
Term
bind to viral reverse transcriptase and block viral RNA from changing into viral DNA that can unite with lymphocty DNA
Definition
NNRTIs
Term
NNRTIs
Definition
nonnucleoside reverse trnascriptase inhibitors
Term
NNRTIs that may be used in combination with NRTIs and PIs
Definition
nevirapine (viramune), delavirdine (rescriptor), efavirenz (Sustiva)
Term
One limitation of NNRTIs is the high incidence of cross-resistance to _
Definition
NRTIs
Term
Only one _ should be used at a time
Definition
NNRTI
Term
Some studies have shown that _ may significantly reduce serum levels of the PIs
Definition
nevirapine and efavirenz
Term
Nivirapine has a reported risk for
Definition
liver toxicity and stevens johnson syndrome
Term
a viral enzyme used in the formation of specific viral protein segments for viral assembly and maturation
Definition
protease
Term
PIs bond chemically with _ to block the function of the enzyme and result in the production of immature, non-infectious viral _
Definition
protease; viral particles
Term
when combined with other antiviral durgs PIs increase the chance of eliminating the virus by interfering with different stages of its _
Definition
life cycle
Term
inhibit or increase the metabolismof other drugs so their use with other medications as well as the dosage of thos medications must be carfully planned
Definition
PI's
Term
PIs and NRTs are associated with serious metabolic derangements including
Definition
elevated cholesterol, triglycerides, insulin resistance and diabetes mellitus and changes in body fat composition
Term
Elevated cholesterol should be treated with the antilipdemic drugs:
Definition
pravastatin or atorvastatin
Term
other antilipidemic drugs such as _ interact with PIs so they should be avoided
Definition
lovastatin
Term
PI
Definition
protease inhibitor
Term
EI
Definition
entry inhibitors
Term
prevent HIV from entering lymphocytes by biding to protein envelope that surrounds the virus
Definition
Entry inhibitors
Term
one of the EIs
Definition
enfuvirtide
Term
a viral enzyme that inserts the viral DNA strand into the lymphoctye's DNA
Definition
integrase strand transfer inhibitors
Term
INSTIs
Definition
integrase strand transfer inhibitors
Term
enhance the effectiveness of certain antiretroviral drugs
Definition
cytochrome P-45o inhibitors
Term
cytochrome P-45o inhibitors are given as a single drug or in combination with one or more:
Definition
NRTis, NNRTIs, or PIs
Term
interferon alfa-2b is used to treat KS and in combination with _ to slow disease progression
Definition
zidovudine
Term
the use of _ is contraindicated for patients receiving an antiretroviral therapy
Definition
st. john's wort
Term
risk factors for perinatal transmission include
Definition
cigarette smoking, illicit drug use, sexually transmitted infections and unprotected sexual intercourse with multiple partners
Term
Assessment of the pregnant woman with HIV should include assessment for STIs and secondary infections such as
Definition
tuberculosis and cervical dysplasia
Term
vaccinations recommended for pregnant women with HIV
Definition
pneumonia nad influenza
Term
When a woman with HIV who is under treatment comes pregnant she should continue her existing HIV treatment regimen if it is effective but should not receive any medications tat are teratogenic such as
Definition
efavirenz EFV
Term
Invasive procedures such as _ are avoided when possible to reduce the risk of perinatal transmission
Definition
amniocentesis
Term
Intrapartum _ is indicated for all pregnant women regardless of their prenatal therapy regimen
Definition
IV zidovudine
Term
scheduled cesarean birth at _ is recommended for women with elevated viral loads
Definition
38 weeks gestation and before rupture of the membranes
Term
women who are HIV positive should be carefully monitored for complications such as
Definition
intrapartum or postpartum hemorrhage, postpartum infection, poor wound healing and infections of the genitorinary tract
Term
It is alwo recommended that IV AZT be administered _ prior to scheduled cesarean birth
Definition
3 hrs
Term
low risk infants at or greater than 35wks gestation born to infected motheres recive AZT prphylactically _ beginning as soon after birht as possible
Definition
4mg/kg PO twice daily
Term
High risk infants receive either _ for 6 weeks
Definition
empiric HIV therapy or a two drug ART regimen
Term
all infants of infected mothers hsould start prhylazis against PJP by _ of age, and should continue to _ unless tow of the three HIV PCR tests are documented as negative
Definition
4 to 6 wks; 12 months
Term
signs of HIV that may be seen in early infancy include
Definition
enlarged spleen and liver, swollen glands, recurrent resp infections, rhinorrhea, interstitial pneumonia, recurrent GI manifestations, urinary system infections, persistent or recurrent oral candidiasis infections and loss of acheived dvelopmental mile stones
Term
most children wiht AIDS have nonspecific findings including
Definition
hepatosplenomegaly, cardiomyopathy, nephropathy, seophageal or pulmonary canddidasis linear gingival erythema, weightloss, failure to thrive, recurrent or chornic diarrhea, chronic eczema and dermatitis and fever
Term
Specific symptoms in children with AIDS appear within 2 years and include
Definition
otitis media, sinusitis, pneumonia and oral cadidiasis
Term
serious bacterial and opportunistic infections such as _ occur in children as the disease progresses
Definition
streptococcus, hamophilus influenzae, salmonella, CMV, KS, lymphoma,
Term
common manifestatoi of pediatric AIDS
Definition
lymphocytic interstitial pneumonia or pulmonary lymphoid hyperplasia complex
Term
Children with AIDS often develop encepholpathy, resulting in failure to attain or loss of _ or a deterioration of _
Definition
developmental milestones; motor skills and intellectual functioning
Term
children with HIV should be immunized as soon as the reac the age recommended for
Definition
DTaP, inactivated polio virus, Hib, HepB, pneumococcal and annual influenza vaccines
Term
Live MMR vaccine is administered at _ months of age unless the child is severly immunocompromised because measles raises the risk of serious outcomes
Definition
12 months
Term
_ vaccine should be adminstered if the child has no mild symptoms of HIV
Definition
Live varicella
Term
If the child is exposed to varicella, the parents should notify their HCP because the child may need varicella zoster immunoglobulin within _ of exposure
Definition
96 hours
Term
If exposed to measels the child may need vaccinatio within _ of exposure
Definition
72 hours
Term
the combination _ vaccine is contraindicated for children with HIV
Definition
measles, mumps, rubella and varicella
Term
younger children are more likely to die of
Definition
pulmonary diseases or infection
Term
Children who survive past 10 years of age are more likely to die of _
Definition
cardiac disease, wasting syndrome, encephalopathy and infection with mycobacterium avium complex
Term
_ tests cannon distinguish between infant and maternal antibodies, therefore, these tests are inappropriate to use as diagnostic tools for infants _ of age
Definition
elisa and wester blot, 18 months
Term
Infants with knonw perinatal HIV exposure should receive virologic diagnostic testing at ages _
Definition
14 to 21 days, 1 to 2 months and 4 to 6 months
Term
_ contribute to impaired integrity of the skin of the paitent with HIV disease
Definition
dryness, malnutrition, immobility from fatigue, and skin lesions on pressure sites
Term
_ may be manifestations of the disease or the result of antiretroviral therapy
Definition
nausea and anorexia
Term
HIV patients should have a diet:
Definition
high in calories and protien
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