HIV Flashcards
Routes of HIV transmission
Blood, Vaginal fluids, semen
behavioral prevention strategies for HIV transmission
Abstinence Condoms Clean Needles Safe Sex education Limiting sex partners
Interventional prevention strategies for HIV transmission
Circumcision post-exposure prophylaxis ART in pregnant females Microbicides Pre-exposure prophylaxis Vaccine
ELISA test what fluids
blood
saliva
rapid tests
ELISA test works how
detects antibodies against HIV1
time after infection to test positive
3-4 weeks up to 6 months
Western blot advantage
more specific than ELISA
HIV diagnosed through what tests
2 + ELISA and a + western blot
CD4 is a surrogate marker for
immune function
During acute infection what is the viral load and CD4
low CD4, high viral load >100K
What is acute retroviral syndrome
flu-like s/s
how long is latency phase of HIV infection
10-15 years
Who should be tested for HIV
everyone 13-65 yo
women during 3rd trimester of pregnancy
Who should be tested for HIV
everyone 13-65 yo
women during 3rd trimester of pregnancy
Who should start ART
everyone HIV +
Which conditions favor more rapid initiation of ART
pregnancy AIDS defining conditions Acute opportunistic infections (NOT cryptococcal meningitis or non-TB mycobacterial infection) CD4 100/year) Higher viral loads (>100K)
Conditions where deferral of therapy may be considered
significant barriers to adherence
comobidities that complicate of prohibit ART (temporary)
Long term nonprogressors and elite controllers
goals of ART
Reduce HIV morbidity and prolong duration and quality of survival
Restore and preserve immunological function
Maximally and durably suppress plasma HIV viral load
Prevent HIV transmission
normal CD4 count
500-1500
per year decline in cd4 count without treatment
50-80
per year increase in CD4 count with treatment
50-150
when does hiv viral load suppression begin after starting treatment
12-24 weeks
when does hiv viral load suppression begin after starting treatment
12-24 weeks
What labs need to be done prior to ART?
CD4 count HIV-1 RNA viral load chemistries LFTs CBC w/ differential Fasting lipids Fasting glucose Urinalysis Hep B/C serologies Resistance testing Pregnancy test HLA B*5701 Tropism assay
What labs need to be done prior to ART?
CD4 count HIV-1 RNA viral load chemistries LFTs CBC w/ differential Fasting lipids Fasting glucose Urinalysis Hep B/C serologies Resistance testing Pregnancy test HLA B*5701 Tropism assay
What % adherence is needed in ART
> 95%
Barriers to adherence
non acceptance of diagnosis busy lifestyle inconsistent work schedule homelessness drug use depression/psych issues
6 steps of HIV replication
- binding and fusion
- reverse transcription
- integration
- transcription
- translation
- viral assembly
6 steps of HIV replication
- binding and fusion
- reverse transcription
- integration
- transcription
- translation
- viral assembly
what occurs in the binding and fusion step
HIV glycoprotein gp120 binds to CD4 receptor and the co-receptor chemokine receptor 5 (CCR5)
what occurs in the reverse transcription step
viral enzyme reverse transcriptase makes a double stranded DNA copy of the viral RNA
what occurs in the integration step
proviral DNA enters the cell nucleus and is incorporated into the CD4 genome via viral enzyme integrase
What occurs in the transcription step
the DNA is transcribed into viral m-RNA by human RNA polymerase
What occurs in the translation step
viral mRNA leaves the nucleus and is translated into long strings of viral protein
What occurs in the viral assembly step
viral protease reassembles viral proteins into mature virus particles which can bud from the cell membrane and infect new cells
name 4 complete regimens brand names
Atripla
Complera
Stribild
Triumeq
atripla contains what drugs
efavirenz
tenofovir
emtricitabine
complera contains what drugs
rilpivirine
tenofovir
emtricitabine
stribild contains what drugs
elvitegravir
cobicistat
tenofovir
emtricitabine
triumeq contains what drugs
dolutegravir
abacavir
lamivudine
name 4 nrti combinations (brands)
truvada
epzicom
combivir
trizivir
truvada contains what drugs
tenofovir
emtricitabine
epzicom contains what drugs
abacavir
lamivudine
combivir contains what drugs
zidovudine
lamivudine
trizivir contains what drugs
abacavir
zidovudine
lamivudine
name 3 protease inhibitor with booster combination brands
kaletra
prezcobix
evotaz
kaletra contains what drugs
lopinavir
ritonavir
prezcobix contains what drugs
darunavir
cobicistat
evotaz contains what drugs
atazanavir
cobicistat
evotaz contains what drugs
atazanavir
cobicistats
initial haart therapy should include
2 nucleoside analogs +
NNRTI or
PI or
Integrase inhibitor
name 7 NRTIs
abacavir emtricitabine lamivudine tenofovir zidovudine didanosine stavudine
abacavir brand and abbreviation
ziagen
ABC
emtricitabin brand and abbreviation
emtriva
FTC
lamivudine brand and abbreviation
Epivir
3TC
tenofovir brand and abbreviation
Viread
TDF
Zidovudine brand and abbreviation
Retrovir
AZT/ZDV
Didanosine brand and abbreviation
Videx EC
ddI
Stavudine brand and abbreviation
Zerit
d4T
BBW for NRTIs
Lactic acidosis
which drug check for HLA B*5701
abacavir
which drug check for HLA B*5701
abacavir
Abacavir has diminished efficacy when
viral load >100,000
Abacavir interacts with
Alcohol - alcohol dehydrogenase
Abacavir interacts with
Alcohol - alcohol dehydrogenase
Don’t give emtricitabine with what other medication
lamivudine
AEs of emtricitabine
GI upset, rash, hyperpigmentation of palms/soles
Emtricitabine special uses
Prep with tenofovir
Active against HBV
Emtricitabine special uses
Prep with tenofovir
Active against HBV
Lamivudine AEs
nausea
insomnia
fatigue
Lamivudine special uses
Active against HBV
Tenofovir special dosing
Renal dose adjustments
take with food
Tenofovir AEs
Fanconi’s syndrome (AEs)
Loss of BMD
least likely for lactic acidosis
Tenofovir special uses
PREP
Active against HBV
Zidovudine AEs
GI intolerance HA malaise myopathy dysphoria hepatitis Lactic acidosis
Zidovudine long term AEs
Bone marrow suppression: anemia, neutropenia
Lipoatrophy
Zidovudine long term AEs
Bone marrow suppression: anemia, neutropenia
Lipoatrophy
which 2 drugs cause pancreatitis and peripheral neuropathy
didanosine
stavudine
didanosine special dosing
wt based
renal dose adjust
empty stomach
didanosine AEs
Pancreatitis peripheral neuropathy diarrhea hepatic dysfunction esophageal ulceration cardiomyopathy CNS toxicity Hypertriglyceridemia Hyperuricemia Retinal changes - optic neuritis
Stavudine special dosing
wt based
renal dose adjustments
Stavudine AEs
Rash peripheral neuropathy hepatitis/pancreatitis arthralgias lipodystrophy neuromuscular weakness
name 5 nnrtis
delavirdine efavirenz nevirapine etravirine rilpivirine
delavirdine brand and abbreviation
rescriptor
DLV
efavirenz brand and abbreviation
sustiva
EFV
Nevirapine brand and abbreviation
viramune
NVP
Etravirine brand and abbreviation
Intelence
ETR
Etravirine brand and abbreviation
Intelence
ETR
Rilpivirine brand and abbreviation
Edurant
RPV
Rilpivirine brand and abbreviation
Edurant
RPV
1st generation NNRTIs
delavirdine
nevirapine
efavirenz
2nd generation NNRTIs
etravirine
rilpivirine
metabolism of NNRTIs
CYP3A4
all inducers of 3A4 except rilpivirine
Class AE of NNRTIs
rash
Class AE of NNRTIs
rash
which 2 NRTIs are BID
zidovudine
stavudine
which 2 NRTIs are BID
zidovudine
stavudine
Special dosing for Efavirenz
bedtime
empty stomach
Nevirapine AEs
Rash, hepatitis
Which NNRTI isn’t started in those with a good immune system (CD4 > 250 for women, >400 men)
Nevirapine
efavirenz AEs
dysphoria/neuropsych symptoms dizziness vivid dreams rash elevated triglycerides PREG CAT D
Etravirine special dosing
BID
after a meal
Etravirine AEs
Rash
nausea
peripheral neuropathy
Etravirine AEs
Rash
nausea
peripheral neuropathy
Rilpivirine special dosing
need acid for absorption
500 calorie meal
Rilpivirine AEs
elevated cholesterol
elevated liver enzymes
depression
rash
rilpivirine not recommended when
viral load > 100,000
rilpivirine not recommended when
viral load > 100,000
Name 9 Protease Inhibitors
Atazanavir darunavir fosamprenavir lopinavir ritonavir indinavir nelfinavir saquinavir tipranavir
atazanavir brand and abbrevation
reyataz
ATZ
Darunavir brand and abbreviation
Prezista
DRV
Fosamprenavir brand and abbrevation
Lexiva
FPV
Lopinavir brand and abbreviation
Kaletra
LPV/r
Ritonavir brand and abbreviation
Norvir
RTV
Indinavir brand and abbreviation
Crixivan
IDV
Indinavir brand and abbreviation
Crixivan
IDV
Nelfinavir brand and abbreviation
Viracept
NFV
Saquinavir brand and abbreviation
Invirase
SQV
Tipranavir brand and abbreviation
Aptivus
TPV
PI class metabolism
CYP3A4 inhibitors
PI class AEs
Hyperlipidemia
Insulin resistance - Diabeetus
Lipodystrophy
Elevated LFTs
Ritonavir use
Booster
Ritonavir AEs
N/V/D
Loss of appetite
dyslipidemia
paresthesias
Ritonavir AEs
N/V/D
Loss of appetite
dyslipidemia
paresthesias
ritonavir drug interactions
inhibits: 3A4, 2D6, 2C9/2C19
induces: 1A3
ritonavir drug interactions
inhibits: 3A4, 2D6, 2C9/2C19
induces: 1A3
ritonavir drug interactions
inhibits: 3A4, 2D6, 2C9/2C19
induces: 1A3
Atazanavir metabolism
3A4, UGT1A1
Atazanavir special dosing
daily with food
boosted with ritonavir + tenofovir
Acid needed
Atazanavir AEs
Hyperbilirubinemia
N/V/D
Nephroliathisis
NO METABOLIC COMPLICATIONS
Atazanavir AEs
Hyperbilirubinemia
N/V/D
Nephroliathisis
NO METABOLIC COMPLICATIONS
Darunavir special dosing
based on treatment experience QD/BID with ritonavir
Which medication most forgiving of missed doses
darunavir
Darunavir AEs
N/V/D Rash Hyperlipidemia Increases in LFTs Sulfa moeity!
Fosamprenavir special dosing
QD/BID with ritonavir based on treatment experience
Fosamprenavir AEs
N/V/D rash paresthesias depression insomnia fatigue sulfonamide moiety!
Lopinavir/ritonavir special dosing
BID with food
Lopinavir/ritonavir AEs
N/V/D
gas/bloating
increased LFTs
hypertriglyceridemia
Indinavir special dosing
TID/BID with ritonavir
empty stomach
12 oz of water
48 oz water per day
Indinavir AEs
Nephrolithasis asymptomatic hyperbilirubinemia N/V Insulin resistance Acute hemolytic anemia
Nelfinavir metabolism
Inhibits CYP 3A4, 2C19, 2D6, and 2C9
Nelfinavir special dosing
BID/TID with food
PI that is NEVER boosted with ritonavir
Nelfinavir
Nelfinavir AEs
diarrhea
flatulence
Nelfinavir AEs
diarrhea
flatulence
Saquinavir special dosing
BID with ritonavir and food
Saquinavir AEs
GI upset, N/V/gas/bloating/diarrhea
dyspepsia
Prolonged QT and PR interval
Tipranavir Special dosing
BID with ritonavir and food
Tipranavir AEs
Rash N/V/D abdominal pain lipid abnormalities elevated LFTs intracranial hemorrhage
Tipranavir AEs
Rash N/V/D abdominal pain lipid abnormalities elevated LFTs intracranial hemorrhage
name 3 integrase inhibitors
raltegravir
elvitegravir
dolutegravir
raltegravir brand and abbreviation
isentress
RAL
elvitegravir brand and abbreviation
combo only - stilblid
EVG
dolutegravir brand and abbreviation
trivicay
DTG
raltegravir metabolism
No CYPS -> glucuonidation
raltegravir special dosing
BID
raltegravir AEs
Diarrhea
HA
nausea
elevated creatinine kinase -> myopathies/rhabdo
Elvitegravir metabolism
inhibits 3A4, 2D6
induces 2C9
Elvitegravir special dosing
CrCl > 70 to start, > 50 to continue, must give cobicistat booster with food
Elvitegravir AEs
Nausea diarrhea HA renal insufficiency Fatigue
Cobicistat use
booster
Cobicistat metabolism
Inhibits CYP3A4, 2D6
cobicistat AEs
increase in SCr
Dolutegravir metabolism
NO CYP -> glucuronidation
Dolutegravir AEs
insomnia
nausea
diarrhea
HA
name one fusion inhibitor
enfuviritide
enfuviritde brand and abbreviation
fuzeon
T20
name one CCR5 inhibitor
Maraviroc
Maraviroc brand and abbreviation
Seizentry
MVC
Enfuviritide special dosing
BID, SUBQ
enfuviritide AEs
injection site reactions
nodules/indurations
bacterial pneumonia
enfuviritde use
salvage therapy
enfuviritde use
salvage therapy
Which retroviral requires tropism testing
maraviroc
tropism testing success rate drops when
viral load
what does tropism testing detect
benefit from CCR5 antagonist
Maraviroc metabolism
3A4
Maraviroc special dosing
BID
maraviroc AEs
fever URI cough rash hepatotoxicity
rilpivirine not recommended when
viral load > 100,000 and CD4
maraviroc AEs
fever URI cough rash hepatotoxicity
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + darunavir/ritonavir
recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + raltegravir
recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + elvitegravir (stribild)
recommended
Is the following a recommended, alternative, other, or not recommended regimen?
tenofovir + emtricitabine + dolutegravir
recommended
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + dolutegravir
recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + Efavirenz
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
tenofovir + emtricitabine + rilpivirine
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + darunavir/cobicistat
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + atazanavir/ritonavir
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + atazanavir/cobicistat
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
Abacavir + lamivudine + darunavir/ritonavir
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + Darunavir/cobicistat
alternative
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + lopinavir/ritonavir
other
Is the following a recommended, alternative, other, or not recommended regimen?
Tenofovir + emtricitabine + lopinavir/ritonavir
other
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + raltegravir
other
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + efavirenz
other
Is the following a recommended, alternative, other, or not recommended regimen?
Abacavir + lamivudine + atazanavir/ritonavir
other
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + atazanavir/cobicistat
other
Is the following a recommended, alternative, other, or not recommended regimen?
abacavir + lamivudine + lopinavir/ritonavir
other
Is the following a recommended, alternative, other, or not recommended regimen?
darunavir/ritonavir + raltegravir
other - when tonofovir/abacavir can’t be used
viral load 200
Is the following a recommended, alternative, other, or not recommended regimen?
Lopinavir/ritonavir + lamivudine
other - when tenofovir/abacavir can’t be used
Is the following a recommended, alternative, other, or not recommended regimen?
monotherapy
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
monotherapy
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
2 NNRTIs
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Triple NRTI
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
unboosted DRV, SQV, TPV
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Didanosine (ddI) + stavudine (d4T)
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Stavudine + zidovudine
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Emtricitabine + lamivudine
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Etravirine + unboosted PI
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
Etravirine + ATV/r, FPV/r, TPV
not recommended
Is the following a recommended, alternative, other, or not recommended regimen?
EVG/Cobicistat/TDF/FTC + other ARVs
not recommended
When to monitor HIV viral load
2-8 weeks after starting ART
q3-6 months
When to monitor HIV viral load
2-8 weeks after starting ART
q3-6 months
When to monitor CD4
q 3-6 months: first 2 years, viremia on ART, CD4
When to monitor chemistries and LFTs
2-8 weeks after starting ART
q3-6 months
Define virologic failure
persistent or rebound viral laod
virologic failure causes
non-adherence
resistance
drug-drug interactions
altered absorption
define immunologic failure
inability to restore CD4 count
immunologic failure causes
lower baseline CD4 (
What impact does resistance have to the patient
drugs with resistance will never work again
more complex regimen - more tablets/times per day
what impact does resistance have to the provider
more challenge to find a regimen
HIV goal during pregnancy
undetectable viral load prior to birth
Preferred NRTIs in pregnancy
zidovudine lamivudine emtricitabine tenofovir abacavir
Preferred PIs in pregnancy
atazanavir/ritonavir
lopinavir/ritonavir
alternative: darunavir/ritonavir
Preferred NNRTI in pregnancy
Nevirapine
What is used for intrapartum ART
zidovudine continuous infusion
optional if viral load
What is used for intrapartum ART
zidovudine continuous infusion
optional if viral load
Postpartum ART medications
Zidovudine and Nevirapine
When to test for HIV in infants
birth, 1 month, 4-6 month, and 1 year
HIV positive and breastfeeding
not recommended
3 ARVs active against Hep B
lamivudine
emtrictiabine
tenofovir
When should hep c treatment start
when HIV viral load is undetectable
infectious body fluids
blood bloody fluids CSF pleural peritoneal amniotic vaginal semen
non-infectious body fluids
urine stool nasal sputum tears vomit sweat
When should PEP be started
within 72 hours of exposure and continued for 4 weeks
Preferred regimen for PEP
tenofovir + emtricitabine + raltegravir
PREP which medication
truvada
who is high risk and gets PREP
partner with HIV-1
engage in sexual activity within a high prevalence area or social network
inconsistent/no condom use
Diagnosis of sexually transmitted disease
exchange sex for commodities
use of illicit drugs or alcohol dependence
incarceration
partner of unknown HIV-1 status / has risk factors
who is high risk and gets PREP
partner with HIV-1
engage in sexual activity within a high prevalence area or social network
inconsistent/no condom use
Diagnosis of sexually transmitted disease
exchange sex for commodities
use of illicit drugs or alcohol dependence
incarceration
partner of unknown HIV-1 status / has risk factors
4 things to do when prescribing PREP
part of a comprehensive prevention strategy
counsel all uninfected patients to strictly adhere
confirm negative HIV-1 test prior to start
Retest for HIV-1 at least every 3 months
Prior to initiation of prep
HIV test to ensure HIV negative
Confirm CrCl > or = 60
Screen for Hep B
Monitoring for PREP
HIV q 2-3 months STI symptom screening q 2-3 months SCr: 3 months after starting STI screening q 6 months irrespective of symptoms Max 90 days per script Regular monitoring of risk behaviors
Which 2 medications interact with acid suppressants
atazanavir
rilpivirine
Which 2 medications interact with acid suppressants
atazanavir
rilpivirine
Which 2 medications interact with acid suppressants
atazanavir
rilpivirine
how to handle drug interaction between NNRTIs and statins
titrate to lipid response
Do not give which statins with PIs or elvitegravir/cobicistat
simvastatin
lovastatin
Which statins should be given with PIs or elvitegravir/cobicistat
Atorvastatin max 20 mg
rosuvastatin max 10 mg
pitavastatin
pravastatin
Which statins should be given with PIs or elvitegravir/cobicistat
Atorvastatin max 20 mg
rosuvastatin max 10 mg
pitavastatin
pravastatin
Avoid fluticasone and budesonide with which ARVs
PIs and elvitegravir/cobicistat
Avoid Salmeterol with which ARVs
PIs and EVG/cobicistat
Avoid Salmeterol with which ARVs
PIs and EVG/cobicistat
Avoid which anticonvulsants with PIs, NNRTIs, elvitegravir and maraviroc
phenytoin
phenobarbital
carbamazepine
oxcarbazepine
Good anticonvulsants to use with ARVs
levetiracetam
gabapentin
topiramate
Good anticonvulsants to use with ARVs
levetiracetam
gabapentin
topiramate
Do not give which anticoagulants with boosted PIs or elvitegravir/cobicistat
apixaban
rivaroxiban
ticagrelor
vorapaxar
When is it ok to give dabigatran with boosted PIs or elvitegravir/cobicistat
CrCl > 50
When is it ok to give dabigatran with boosted PIs or elvitegravir/cobicistat
CrCl > 50
Don’t give clopidogrel with which ARV
etravirine
NNRTIs and PDE 5 inhibitors management
treat to effect
PIs and EVG/cobicistat with PDE5 inhibitors management
Sildenafil: Start 25 mg Q48
Tadalafil: Start 5 mg Q72. Max 10 mg Q72
Vardenafil: Start 2.4 mg Q72
PIs and EVG/cobicistat with PDE5 inhibitors management
Sildenafil: Start 25 mg Q48
Tadalafil: Start 5 mg Q72. Max 10 mg Q72
Vardenafil: Start 2.4 mg Q72
Which benzo don’t you use with PIs and EVG/cobicistat
alprazolam
diazepam
triazolam
which benzos are ok with PIs and EVG/cobicistat
lorazepam
oxazepam
tempazepam
Which benzos don’t you use with efavirenz
triazolam
Which herbals are contraindicated with ARVs
ST. John’s wort
Garlic