Allerigies/Immune Flashcards
(25 cards)
Immunoglobulins
- Antibodies formed by the lymphocytes and plasma cells
- 5 Groups (IgE, IgI,IgG, IgM, IgA)
- IgM, IgG, IgA – well defined protective functions
- IgE involved in allergic reactions
Allergic Disorders:
- Anaphylaxis
- Allergic Rhinitis
- Contact Dermatitis
- Atopic Dermatitis
- Dermatitis Medicamentosa
- Urticaria and Angioneurotic Edema
- Hereditary Angioedema
- Food Allergy
- Latex Allergy
Hypersensitivity
Anaphylactic (Type I)
Cytoxic (Type II)
Immune complex (Type III)
Delayed type (Type IV)
Anaphylaxis casued by?
- bug bites
- food
- drug
s/s of anaphylaxis
- stridor (high pitched wheezing)
- dilated pupils
- angioedema
- low BP
- locally: hives & edema
- shock can occur
Interventions for anaphylaxis
- give oxygen
- epi. 1-1000 IV
- steroids
- expanders
- aminophylline (drug)
How quickly until you see reaction of anaphylaxis?
Within minutes
Cytoxic reaction
- transfusion reaction
- newborn Rh problem
- thrombocytolia
Immune complex reaction
joitnt, kidney serum sickness
delayed type reaction
- can be up to 3 days
- tissue damage caused by dermatitis, hashimoto
- an example could be TB skin test
Diagnostics of allergies
Blood work -CBC with differential -Eosinophil Count (increase 15-40%) -Total Serum Immunoglobulin E Levels (increased = allergic reaction) Skin tests -Intradermal -Prick (with contaminated needle) -Scratch (drop medicine on skin) Provocative testing -give allergin and look for reaction -use for pt with multiple allergies Radioallergosorbent Testing -tests for specific IgE allergies
immediate clinical manifestations of allergies:
Skin – Uticaria (hives)
Respiratory - wheezing
Delayed clinical manifestations of allergies
- Contact S/S
- Vesicular lesions
- Papules
- Edema
- Crusting
- Thickening of skin
Latex Allergy
Allergy to natural rubber products
“Popular” among health care workers
At risk - patients esp. surgical procedures
Cross allergies for someone with a latex allergy?
banana, kiwi, avocado, pineapple, passion fruit, chestnuts
Routes of exposure for latex allergy:
- cutaneous (through skin)
- per-cutaneous (puncture through skin)
- mucosal
- parenteral
- aerosol
Patient management of latex allergy
Avoidance - May need to quit working in environment
Warning labels/bracelets
Drug management of latex allergy
- Antihistamines
- Epinephrine
- Mast cell stabilizers
- Steroids
- Immunotherapy
*Nursing management of latex allergy
- Screen for allergy
- No exposure
- Teaching
Autoimmune Diseases
- Systemic Lupus Erythematosis(SLE)
- Scleraderma
- Multiple Sclerosis
- Myasthenia Gravis
- Guillian Barre’
- Rheumatoid Arthritis (RA)
- Type I Diabetes
Tissues affected by autoimmunity:
- brain
- bones
- muscles
- skin
- lungs
- nerves
- gi tract
- blood
- thyroid
Systemic Lupus Erythematosus
- increased production of auto antibodies
- can cause major organ failure
- cannot predict progression
Types of Lupus
- SLE (80-85% of pts
- Discoid LE - skin only (10-15% of pts)
Causes of Lupus
- drug induced
- genetics and hormonal
- radiation
- sunburn
- heat stroke