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73 Cards in this Set
- Front
- Back
which hep?
source of virus: feces |
Hep A
Hep E |
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source of virus: blood/blood-derived body fluids
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Hep B
Hep C Hep D |
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route of transmission: fecal-oral
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Hep A
Hep E |
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route of transmission percutaneous permucosal
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Hep B
Hep C Hep D |
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chronic infection:
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Hep B
Hep C Hep D |
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t/f
hep A and E are chronic infections |
f
|
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prevention:
ensure safe drinking water |
Hep E
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prevention: pre/post exposure immunization:
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Hep A
Hep B Hep D (risk behavior modification) |
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prevention :
blood donor screening risk behavior modification |
Hep C
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hep A can be received via --- contact
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person to person via oral fecal contact
oral-anal contact |
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what's is hep a inactivated by
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high temp
formalin chlorine |
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infectious time of hep a
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2 weeks prior to illness to 1 week after onset of symptoms
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who's usu asymptomatic
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kids < 6 yrs
usu carriers |
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t/f
hep a usu self limiting |
t
and conferes lifelong immunity upon recovery |
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s/s of hep a
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flu like symptoms (n, anorexia, fatigue, fever, ha)
acute illness (worsening of symptoms) icteric hepatitis mild wieght loss ruq pain |
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icteric hepatitis s/s
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dark urine
light stools icteric sclera, secretions, skin |
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why ruq pain w/ hep a
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due to hepatomegaly
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in hep a what comes first IgM or IgG
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1st: IgM . . . acute infection
if you see IgG. .. past infection |
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hep A
--- if n/v present |
hydration
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what do you limit in hep a
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meds that may cause liver damage
APAP 2 g/day |
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prevention of transmission:
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proper hygiene
vaccinations ~ 2-4 weeks prior to exposure IgG w/in 2 weeks of exposure (protects for 4-5 months) |
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hep a: routine vaccination for kids -- yr old
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1 year old
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routine hep A vaccination for kids > 2 yres of age in -- areas
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endemic
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routine hep A vaccine for men:
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who have sex w/ men
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routine hep A vaccination for:
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illegal drug use
occupational risk have chronic liver disease receive bl products for clotting adopt kids from endemic areas travel to endemic areas |
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symptoms of hep E similar to
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hep A
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hep E can be fatal in:
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pregnant women
greatest in 2nd and 3rd trimester |
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t/f
there's a vaccine for hep E |
f
|
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modes of transmission of hep E
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parenterally
sexually perinatally rarely bl transfusion |
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highest conc of hep B
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blood
serum wound exudates |
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mod conc of hep B
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semen
vag fluid saliva |
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low/not detectable conc of hep b
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urine
feces sweat tears breast milk |
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the --- --- to the hep b virus is cytotoxic hepatocytes. . .esp over long periods
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immune response
|
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risk factors for disease progression:
hbv dna levels: |
> 10^3 to 10^4 virions/mL
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risk factors for disease progression
genotype: |
C infection
|
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risk factors for disease progression
HBeAg neg ---- |
mutants. .. change virus. .. . toxic to liver
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risk factors for disease progression
co---- --- age --- sex |
coinfections
older male |
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risk factors for disease progression
severity of --- --- |
liver disease at diagnosis
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risk factors for disease progression
frequency of --- ---/ ab --- --- |
hepatic flare
liver function |
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risk factors for disease progression
--- use and --- |
etoh
smoking |
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if positive active viral infection:
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HBsAg
(acute or chronic) |
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w/ chronic hep b virus what's not present
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no antiHBs
|
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if positive: immunity is present (via vaccination or infection)
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HBsAb
|
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if present it indicates exposure to HBV (not vaccine)
core antigen cannot be detected |
HBcAb
only seen in infection |
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derived from HBV pre-core and serves as a marker of HBV replication and infectivity
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HBeAg
|
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if ABsAg - and antiIIBs-
what do u do |
give vaccine
|
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if ABsAg - and anti-IIBs +
what do you give |
nothing
immune |
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HBeAg +
alt < 1 uln? |
monitor
q 3-6 months ALT q 6-12 month HBeAg |
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HBeAg +
ALT 1-2 x ULN |
Q 3 mo ALT
q 6 mo HBeAg bx persistent or more than 40 yrs treat |
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HBeAG +
ALT > 2 x ULN |
q 1-3 mo ALT, HBeAg
Bx optional Treat! (jaundice, decompensated or persistent) |
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HBeAg-
ALT > 2 x ULN HBV DNA 2000 IU/L |
bx optional
treat if persistent |
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HBeAg-
ALT 1-2 x ULN HBV DNA 2000-20,000 |
q 3 mo ALT
consider Bx treat prn |
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HBeAg-
ALT < 1 x ULN HBV DNA < 2,000 U/mL |
Q 3 mo ALT x 3
then 6-12 mo if stable monitor |
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goasl of tx:
reduction in ---- --- limit --- disease improve or control the extent of ----- |
HBV replication
progressive disease damage |
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surrogate endpoints of tx:
--- reduction biochemical ------ ---- improvements ---- loss or seroconversion |
virological reduction ( dna undetectable or suppression)
biochemical normalization (ALT) histological improvements (dec inflammation and stage of fibrosis) HBeAG adn HBsAg loss or seroconversion |
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interferon/pegylated interferon
has better responses in genotype: |
A and B
|
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interferon/pegylated interferon
not recommened for |
decompensated cirrhosis
|
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interferon/pegylated interferon
HBeAg+: increased ------- lower level ----- give to -- and ---- if inc in ALT's |
ALT's
DNA asians kids |
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interferon/pegylated interferon
does not respond well to high --- --- |
viral loads > 200, 000
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frequency of interferon
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3 x week
|
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how long should you give interferon HBeAg +
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4-6 months
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how long should you give interfereon HBeAg-
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1 yr
|
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benefits of interferon
|
no drug resistance and set duration
|
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ae of interferon
|
flu like symptoms
leukopenia thrombocytopenia depression anxiety irritability hair thinning hypo/hyper thyroidism visual disturbances |
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interferon should not be used w/
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cirrhosis . . .due to flares
|
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the least potent nucleoside/nucleotide analogs
|
adefovir
~30% resistance at 4 yrs |
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what are not cross resistant
|
adefovir
tenofovir |
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what's x resistant
|
lamivudine
telbivudine entecavir |
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nucleoside/nucleotide analogs
which do you monitor for nephrotoxicity |
tenofovir
adefovir |
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telbivudine increases --- and --- ---
|
CK
peripheral neuropathy |
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nucleoside/nucleotide analogs
prob w/ hiv pos patients |
increase risk of HIV drug resistance w/ monotx
|
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duration of nucleoside/nucleotide analogs tx
|
> 1 yr
additional 6 mo after eAg conversion |
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benefits of nucleoside/nucleotide analogs
|
oral meds can be used in decompensated disease or thos waiting transplant
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