HIV Flashcards
What does NRTIs stand for?
Nucleoside Reverse Transcriptase Inhibitors
components of basic ART
2 NRTIs + integrase inhibitor
NRTIs MOA
prohibits transfer of ssRNA to dsDNA
NRTIs examples
- Truvada (tenofovir DF + emtricitabine)
- Descovy (tenofovir AF + emtricitabine) - fewer kidney and bone issues than Truvada
- Epzicom (abacivir + lamivudine) - better for kidney disease
NRTIs SE
- osteoporosis
2. kidney disease
special consideration with Epzicom and ziagen
need to do HLA-B701 assay test before starting therapy b/c risk of hypersensitivity reaction
What does NNRTIs stand for?
Non-nucleoside Reverse Transcriptase Inhibitors
NNRTIs examples
- Atripla
2. Complera
NNRTIs usage
no used as much now b/c lot of resistance! MC class for transmitted resistance
NNRTIs MOA
prevent RNA –> DNA
NNRTIs SE
- depression
- abnormal dreams
- insomnia
integrase inhibitors example
Biktarvy (combo of Descovy + integrase inhibitor)
Dolutegravir (DTG)
Bictegravir (BIC)
integrase inhibitors MOA
block HIV from being integrated into cell DNA
benefits of integrase inhibitors
least resistance, very well tolerated
integrase inhibitors SE
neuropsychiatric problems (rare)
protease inhibitor historical significance
- first drug that was shown to prolong life in HIV patients
2. class of drug that showed need for 3 different drugs for HIV
protease inhibitor example
Indinavir
protease inhibitor MOA
blocks HIV copies from being cut into right size proteins so new virus is not infective
protease inhibitor SE
- increase in lipids
- lipodystrophy
- GI s/e
- lots of drug interactions
- increased cardiovascular disease risk
Entry inhibitors MOA
block HIV fusion to CD4 cells
PrEP example
Truvada (TDF + emtricitabine)
Descovy
PrEP MOA
prevents replication of virus and prevents infection
PrEP Indications
- MSM
- HIV + partner
- commercial sex workers
- IV drug users
PrEP dosage
once daily drug, given in 3 month supply
what needs to be check before giving PrEP?
kidney function!
also viral load, viral Ab/Ag
when to stop PrEP
- HIV +
- any issues w/ kidney function
- becomes pregnant
- non-compliant
what should you check during every f/u if taking PrEP
- HIV test
- pregnancy test
- STI
- renal function
PEP example
Tenofovir + emtricitabine + raltegravir (I.I)
when to test for HIV with PEP
at baseline, 6 and 12 weeks, 6 months
special considerations with HIV patients
age quicker - will see disease in 30-50 y/o that may not have developed until 50-70s
- sooner screening, monitor lipids, blood sugar, renal disease, bone loss
strongest predictor of disease progression
CD4
goal of treatment
decrease viral replication - undetectable viral load
raise CD4 count >200
what do you use to evaluate response to treatment
HIV RNA (viral load)
time frame to treat HIV before it goes into reservoirs
4 weeks
truvada and descovy dose adjust for who?
renal patients w/ low creatinine clearance
lab abnormality with NNRTIs
elevated LFTs b/c cytochrome P450 system
special considerations with protease inhibitors
all require use of pharmacokinetic booster so that lower doses can be used (norvir, cobistat)
special considerations with integrase inhibitors
avoid Ca, Fe, minerals - separate by 2 hours prior or 6 hours after
rapid start regimen
Tivicay + Descovy
important factor in HIV treatment
adherence - missing 3-4 doses can cause loss of class of drugs - needs to be 95%
lab to check before starting HIV treatment
creatinine clearance
considerations before prescribing PrEP
- age
- plans for pregnancy
- osteopenia/osteoporosis