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Pathology General 6737b173

Ram Devi presented with generalized edema sweating and

A
T cell mediated cytotoxicity
B
IgG mediated reaction
C
IgE mediated reaction
D
IgA mediated hypersensitivity reaction
High-Yield Explanation
The symptoms of the patient are d/t hypersensitivity type I reaction Type I is mediated by IgE and it flairs up within minutes. The symptoms range from rashes to anaphylactic shock with vasodilatory hypotension and bronchiolar spasm. Examples of type I Eczema* Hay fever* Asthma* Anaphylactic shock* Urticaria* A cute dermatitis * Theobald Smith reaction * Other hypersensitivity reactions Type II is characterized by an antigen-antibody reaction on the surface of a host cell*. Mediated by IgG or IgM. Examples 1. Blood transfusion reactions * 2. Transplant rejection * 3. Autoimmune hemolytic anaemia* 4. Autoimmune thrombocytopenic purpura * 5. Diabetes disease* 6. Good pasture’s syndrome * 7. Grave's disease* 8. Myasthenia gravis* 9. Pemphigus 0. Pernicious anaemia* 1. Rheumatic fever* Type HI reactions Mediated by antigen/antibody complex*. Examples 1. PAN* 2. Post streptococcal glomerulonephritis* 3. Rheumatoid arthritis* 4. Systemic lupus erythematosus* 5. Acute viral hepatitis* 6. Penicillamine toxicity* 7. Serum sickness* 8. Arthus reaction* Type IV reaction Cell-mediated reaction (delayed hypersensitivity)*. Examples 1. Tuberculosis* 2. Sarcoidosis* 3. Temporal arteritis 4. Contact dermatitis* (not that acute dermatitis in type I) 5. Lepromin test* 6. Patch test* 7. PPD*

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