Infection/Immune Flashcards
Neutrophil function
Mature neutrophils perform phagocytosis
Basophils
Stimulate inflammation and allergic reactions. Prevents blood clotting
Eosinophils
Prolongs inflammatory response.
Good at fighting parasites
Tissue mast cells
Prolong general and allergic inflammation
3 stages of inflammation
- Vasodilation: edema, warmth, redness
- Exudate stage: pus with dead WBCs
- Tissue repair and replacement
Stage 1 HIV
CD4-T count >500
No AIDS
Stage 2 HIV
CD4-T count 200-499. No AIDS
Stage 3 HIV
CD4-T count less than 200 and/or
AIDS present
What is a sign of infection that is often present first in older adults?
Change in consciousness or orientation
Hypersensitivity
Overactive immunity with excessive inflammation
Type 1 hypersensitivity
Rapid hypersensitivity.
Excessive vasodilation from excessive IgE and histamine release
Examples of type 1 hypersensitivity
Angioedema, anaphylaxis, allergic asthma
Type 2 hypersensitivity
Cytotoxic reaction in which the body destroys self cells
Examples of type 2 hypersensitivity
Hemolytic anemia, hemolytic infusion reaction.
Type 3 hypersensitivity
Immune complex mediated reaction. Attacks connective tissue and blood vessels
Type 4 hypersensitivity
Delayed reaction by the T cells. Stays local
Examples of type 3 hypersensitivity
Most autoimmune diseases: rheumatoid arthritis, lupus
Examples of type 4 hypersensitivity
PPD reaction, poison ivy, graft rejection
What hypersensitivity can be treated with plasmapheresis?
Type 2 cytotoxic cell mediated hypersensitivity
Treatment for angioedema?
Epinephrine and corticosteroids
What is the first line drug for anaphylaxis?
Epinephrine
Fatigue, butterfly rash, body aches are symptoms of what
Lupus
What kind of drug is methotrexate?
It’s an immunosuppressant cytotoxic drug
What kind of drug is promethazine?
1st gen antihistamine
What kind of drug is loratadine?
2nd gen antihistamine
What kind of drug is cetirizine?
2nd gen antihistamine
What kind of medication is diclofenac?
1st gen NSAID
What kind of medication is meloxicam?
1st gen NSAID
What kind of medication is nabumetone?
1st gen NSAID
What kind of medication is celecoxib?
2nd gen NSAID
Signs of early HIV infection?
Flu like, non specific symptoms:
Body aches, chills, fever, night sweats
HIV post exposure prophylaxis
cART: Start within 36 hours
What is cryptosporidiosis?
Intestinal infection that can occur in someone infected with HIV
What is important to note about tb testing of someone with HIV?
They may have a false negative test due to anergy: an inadequate immune response
What is PrEP?
Pre-exposure prophylaxis that must be taken once daily for individuals at high risk
What is the most common malignancy for individuals with HIV?
Kaposi’s sarcoma: skin lesions
what is the effect of an overdose of acetaminophen?
liver damage
what are the adverse effects of NSAIDs?
gastric ulcers, bleeding, renal impairment
what is the purpose of a peak and trough?
to stay within the therapeutic range of the antibiotic
what is the education that needs to be done for women of childbearing age taking antibiotics?
antibiotics interfere with effectiveness of oral contraceptives
what is the result of vancomycin overdose?
ototoxicity and nephrotoxicity
what is the result of gentamycin toxicity?
ear and kidney damage
what is gout?
inflammation of joints caused by urate crystals
What are the two different types of gout?
primary: hereditary; issue with uric acid metabolism
secondary: caused by excess uric acid in blood; a diet rich is purines, protein
joint pain worsens with activity and improves with rest
osteoarthritis
what is a joint effusion?
abnormal accumulation of joint fluid
what is pannus?
a tissue in the joint formed from immune cells which erodes the cartilage and bone
what happens to the synovial fluid in rheumatoid arthritis?
it gets thicker
joint pain in the morning that resolves with movement
rheumatoid arthritis
which condition causes bilaterally inflamed joints?
rheumatoid arthritis
What are the cells responsible for cell mediated immunity?
T lymphocytes
What is the golden standard for HIV testing?
4th generation lab test
What is the treatment for HIV?
Combined antiretroviral therapy (cART)
What are the symptoms of an early HIV infection?
Flu-like symptoms: body aches, night sweats, fever
What is oseltamivir used for?
treatment of the flu. must be started within 48 hours of symptoms.
What drugs cause tendon rupture ?
Ciprifloxacin and levofloxacin