Ortoski: High-yield Stuff Flashcards
Geography associated with HIV?
Subsaharan Africa
More men or women, which race?
Men more than women, African American predominance
Top 3 modes of acquisition of HIV?
- M to M sexual contact
- Heterosexual
- IVDA
Around what time was there more treatment, so fewer cases of HIV?
93-94
Since HIV causes inflammation, what are 2 areas of issue?
Cardiac and cancer
HIV is the BLANK leading cause of death currently
6th- Used to be leading in early 90s in the 25-45 age group
Reducing viral load reduces what?
Transmission
NRTI
Nucleoside reverse transcriptase inhibitor
NNRTI
Non-nucleoside reverse transcriptase inhibitor
PI
Protease inhibitor
D Drugs
d4t, ddl, ddc, AZT
Does AZT have a lot of SE?
YES
Nadir CD4
Lowest CD4 count ever
Naive
No prior drug exposure
Sequestered mutations
Found in minority- not detectable
BLD
Below level of detection- less than 20
Where is HIV 1 found?
Worldwide
Where is HIV 2 found?
Africa- Less easily transmitted
Group M
Major group worldwide
Group O
Other
How many subgroups or clades?
11
Group M Subgroup B
Americas, Japan, Austrailia, Carribean, Europe
Group M Subgroup C
S. Africa, India
Typical transmission modes?
- Sexual
- Vertical (mother to child)
- Transfusion
- IV drug use
If mother’s viral load is undetectable, is it less likely to transfer to fetus?
YES
Risk factors?
- 3+ nights in prison
- Prostitution
- Other STD
What should be emphasize?
Routine voluntary testing
What test is the best and confidental?
Serology
What is needed for a + result?
2 ELISA screening followed by 1 Western Blot for CONFIRMATION
What test is done for infants?
DNA test (newborns have positive antibodies no matter what from mom)
When is DNA test done?
After 1 month and after 4 months
What does the 4th generation ELISA have?
p24 antigen
What is required for an AIDS diagnosis?
Positive serology and a CD count under 200 and/or AIDS defining illness
CD4+ Under 200
Prevent PCP pneumonia
CD4+ Under 100?
Prevent Toxoplasmosis
CD4+ Under 50?
Prevent MAC
What is used to test kidney and liver function?
CMP
Live Vaccines?
NOOOOOO
Dosing for Hep B vaccine?
Give HIV pt. 40mcg (normal is 20mcg)
When can you give MMR?
Is CD4 is over 200
Phase 1:
Greater than 500 CD4 cells, asymptomatic, acute phase, PHI
Phase 2:
CD4- 200-500, Early symptomatic
Phase 3:
CD4- 50-200, Late symptomatic, full blown AIDS
Phase 4
Fewer than 50 CD4 cells- Advanced AIDS
What measures extent of immune system damage?
CD4 count
What does viral load measure?
Plasma HIV RNA level…higher means more CD4 destruction
What is most popular viral RNA assay?
PCR
What test does everyone infected get immediately?
Resistance
What % of infections are resistant to at least 1 drug because the index patient was resistant to the drug?
15%
What is best bang for buck?
Genotyping (can also use trophile/trophism test)
R5 Viruses, CCR5 CoReceptor, Macrophages, Early
M TROPIC
X4 Viruses, CXCR4 CoReceptor, T-cells, Late, Faster to AIDS?
T TROPIC
M184V mutation
M: AA found in wild tpye
184: AA (codon) position
V: AA substitution/variant
We only have drugs that kill what trophism?
R5
M184V mutation, what drugs won’t work?
Lamivudine and Emtricitabine
K103N mutation, what drugs will work?
All of the 1st generation NNRTIs
4 types of Anti-retroviral treatment?
- Reverse Transcriptase Inhibitors: Nucleoside RTI (NRTI), non-Nucleoside RTI (NNRTI), Nucleotides
- Protease Inhibitors: PI
- Entry Inhibitors: Attachement inhibitors, chemokine receptor inhibitors, fusion inhibitorsa
- Integrase inhibitors
True or False: ART is recommended for ALL HIV infected persons regardless of CD4 count
TRUE
Is monotherapy okay?
NO
1 exception to monotherapy?
Pregnant woman that normally will accept no treatment, but is willing to take AZT at the time to prevent the baby from contracting the virus
Can you piece drugs together?>
NO…ALL OR NONE
-Start all drugs or stop all drugs at the same time
Diagnosis of AIDS?
AIDS defining illness and/or CD4 count below 200
All protease inhibitors are taken with what?
Ritonavir
What is ritonavir?
A boosting agent for P450… not a viral killer anymore and helps with one-a-day dosing of others
HS/HLAB*5701, CAD risk, Danger with Rechallenging?
Ziagen or ABACAVIR
Less use with AE, hyperchromic macrocytic anemia
AZT (retrovir)
If virus has M184V mutation, what won’t work?
Lamivudine and emtricitabine
Neurological AE short lived, depression issues, low genetic barrier?
EFAVIRENZ (sustiva)
Associated with CAD
Protease Inhibitors
RENAL STONES
Reyataz and Crixivan
Renal Issues
Viread
Entry inhibitors (CCR5)?
Fuzeon
Selzentry
Injection SC only, painful, cellulitis?
Fuzeon
Use with R5 virus only?
Selzentry
Work in nucleus?
Integrase inhibitors
Now indicated first line with low AE?
Isentres (integrase inhibitor)
Are there dietary restrictions with these drugs?
YES
Does adjustments to avoid AE in?
- ED Medication
- PPI
- Statins
- CCBs
Can you use Simvastatin?
NO
What 3 combos can be used to initiate?
- NNRTI and 2 NRTI
- PI (preferably boosted with ritonavir) and 2 NRTI
- INSTI and 2 NRTI
(non nuc or PI pr INSTI PLUS 2 NUCs)???
What are 2 components of lypodystrophy?
- Lipohypertropy
2. Lipoatrophy
Ring-Enhanced Lesion
Toxoplasmosis brain scan related to an HIV case
-CD4 count under 100 and positive antibodies for Toxo
Palmar or plantar rash?
SYPHILLIS
What do newborns born to an HIV+ Mom get the first 6 weeks of life?
AZT (zidovudine)
-This is started 8-12 hours after birth and discontinued at 6 weeks (DNA BLD)
When is PCP prophylaxis initiated for a baby born to HIV + mom?
At 6 weeks
Breast feeding?
NO
What is given for pre-exposure prophylaxis for dischordant couples that have an accident?
PrEP- Tanofovir
Do all states require pretest counseling or signed release?
NO
Anemia?
AZT (Zidovudine)
HS
Abacavir (Ziagen)
Nightmares
Efavirenz (Sustiva- CNS effects)
Kidney Stones
2 protease inhibitors- Reyataz and Crixivan
Undetectable mean irradicated
NO
What is used to assess efficacy of therapy?
Viral loads
Best efficacy is how many drugs?
3
Pregnant women should at least take what?
AZT
Combo therapy should be started and stopped…
ALL OR NONE
Can you prescribe simvastatin?
JUST DON’T DO IT