Immune System and Corticosteroids Flashcards
what do NRTIs treat?
HIV
what drugs are NRTIs?
zidovudine (AZT, Retrovir)
what is the action of NRTIs?
- blocks viral replication (ability to substitute for DNA components, thymidine substitute)
- slows the progression of the infection
what side effects are seen with NRTIs?
- headache
- malaise
- nausea and vomiting
- lactic acidosis (serious)
- hepatomegaly (serious)
- anemia/neutropenia (adjust dose, could lead to hospitalization)
what nursing considerations should there be with NRTIs?
- infection prevention
- hazardous drug
can NRTIs be used in pregnancy?
yes - it has been successful in stopping the transmission of HIV from mom to baby
what is acyclovir used to treat?
herpes simplex virus (HSV) and varicella-zoster virus
what is the action of acyclovir?
inhibits viral replication by suppressing the synthesis of viral DNA
what are the side effects of acyclovir?
- nausea and vomiting
- headache
- neurologic toxicity when given IV
- drowsiness when combined with zidovudine
can NRTIs be used alone?
no, must be used with another drug
when could acyclovir cause neurotoxicity?
when given through an IV
when could acyclovir cause drowsiness?
when used with zidovudine
what routes can acyclovir be given?
topical - for something like a mouth sore
IV - for something more systemic
acyclovir is only effective when …
when the virus is active (the virus could flare up when the immunosystem is suppressed or fighting something else)
what is herpes zosters?
shingles - caused by dormant varicella-zoster
At what age does herpes zosters typically happen?
after age 50 (vaccine is recommended around 50)
is herpes zosters contagious?
yes - highly contagious
- spreads through open vesicles and pustules
where does herpes zosters take place on the body?
sensory nerve cells
- very painful and can last for months
is there treatment available for herpes zosters?
- antiviral can help in the first 48 hours
- supportive treatment
what does interferon treat?
hepatitis B, C, and malignant melanoma
what is the action of interferon?
blocks viral entry into cells and blocks synthesis of viral messenger RNA
what route is interferon given?
subcutaneous
what side effects are seen with interferon?
- flu-like symptoms (in 50% of pts, improves with time)
- depression (worsens with time)
- neutropenia and leukocytopenia (increased risk for infection)