general pharmacology Flashcards
(43 cards)
TB major symptom? how to tell if active? latent vs active treatment?
1 - night sweats
- to see if active- chest x ray
- latent - monotherpy
- active combo therapy
which drugs are used for latent TB?
RI in RIPE
rifampin , Isoniazid
active TB drugs?
RIPE
rifampin , Isoniazid, pyrazinamide, ethambutol
RifamPin MOA, SE?
MOA: binds to B subunit of RNA polymerase -> stops mRNA transcription
SE: pink -> pink/orange discoloration of urine/tears , hepatotoxicity, exudative conjunctivitis
Isoniazid MOA, SE?
“used in isolation”
MOA: inhibits mycoloic acid synthesis -> stops cell wall synthesis
SE: hepatotoxicity, vitamin B6 (pyridoxine) deficiency-> peripheral neuropathy, optic neuritis/optic atrophy -> vision loss
name for vitamin B6
Pyridoxine
ethambutol MOA, SE
MOA: inhibits arabinosyl transferase -> stops cell wall synthesis
SE: retrobulbar & bilateral optic neuritis -> decreased VA (reversible, but takes months, some cases irreversible), color blindness
PATIENTS should get baseline and periodic testing for VA and reg/green color discrimination
what ending do antiviral drugs have?
- vir
what is used for influenza treatment?
oseltamivir
oseltamivir MOA, SE
MOA: inhibit viral neuraminidase for flu A&B -> prevents spread of virus along mucous lining of respiratory tract.
SE: conjunctivitis
HIV therapy drugs
retrovir, epivir-HBV, AZT
AZT used to present transmission to fetus during pregnancy as well
Atripla
MOA , SE of HIV drugs
MOA: nucleoside analogs of thymidine -> inhibit reverse transcriptase = RNA-dependent DNA polymerase
SE: Bone marrow supression (ie. decrease in blood, WBCs, platelets -> granulocytopenia, anemia, pancytopenia)
lactic acidosis/ muscle break down (myopathy, myositis), macular edema
what does reverse transcriptase do?
RNA virus -> DNA virus
HIV -Aids CD4 count
HIV < 200
AIDS < 50
HEP C treatment drugs
ribavirin + interferon!
Ribavirin MOA, SE
MOA: inhibit viral RNA polymerase
SE: conjunctivitis
RIBAViriN
- R-retinal detachment
- I - ischemia (CWS)
- B - Bleeding (retinal hemes)
- A - artery occlusions
- V - Vein occlusions
- N- optic neuritis
Need baseline testing + periodic testing esp for DM, HTN patients
*** everything stops once d/c drug
similar retinopathy SE for interferon. peginterferon
what viruses are in the herpes family? what type of viruses are these?
HSV 1&2
VZV
CMV
DNA virus
MOA of all anti-herpes virus agents?
inhibit DNA polymerase , to stop DNA synthase
What are anti-herpes meds? clinical indications
- viroptic - for HS keratitis
- acyclovir/valcylovir/famciclovir (ORALS) cold sores (HSV1), genital sores (HSV2), shingles (VZV), HZO, HSV keratitis, prophylactically for recurrent HSV.
- ir. all body and eye - ganciclovir - HSV keratitis, CMV (prescribed as an intraocular sustained release capsule)
- foscavir - CMV, when ganciclovir fails, acyclovir resistant HSV infection in AIDS
what preservative is in viroptic? why is it bad?
thimersol - > toxic to cornea
What are the 4 drugs that can cause optic neuritis?
D- Digioxin
I - Isoniazid
C - Chloraphenticol, contraceptives
E - Ethambutol
Penicillamine is not well tolerated, what three ocular SE can result from treating Wilson’s Dz with Penicillamine?
- Myasthetia (diplopia, ptosis)
- Optic Neuritis
- Ocular Pemphigoid (fluid filled blisters)
Idk what is worse, the copper or the SE from the drug to tx it.
Menier’s treatment
Avoid cats
Caffeine
Alcohol
Tabacco
Salts
Side effects of tamoxifen
“think of the C’s”
- Crystallin retinopathy
- Clots -> CRVO, BRVO
- Cornea -> Whorl Keratopathy
- Cataract
- Cancer -> can cause uterine cancer.