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Microb/Immuno 2
First Aid Q&A: Microbiology & Immunology 2
| Question | Answer |
|---|---|
| What is the treatment for food poisening resulting from reheated rice? | B. cereus enterotoxin; treatment with supportive therapy as this is a preformed enterotoxin so antibiotics are ineffective |
| What autoantibodies are associated with microscopic polyangitis, a form of polyarteritis nodosa? | Perinuclear antineutrophil cytoplasmic autoantibodies (P-ANCA); Not necessarily related to classic polyarteritis nodosa, just microscopic polyangitis |
| What autoantibodies are associated with Wegeners granulomatosis? | Circulating antineutrophil cytoplasmic autoantibodies (C-ANCA) |
| This gram positive cocci is a common cause of nosocomial urinary tract infections and subacute endocarditis. | Enterococcus, treated with ampicillin |
| What type of graft is from an identical twin sibling? | Syngeneic graft |
| What type of graft is from the same species? | Allogenic or homograft |
| What type of graft is from the patients own tissue? | Autologous graft |
| What type of graft is taken from a different species? | heterograft (also called xenogenic graft) |
| What is the most common cause of bacterial meningitis ages 6 months to 6 years? | Streptococcus pneumoniae |
| What is the treatment for chlamydia urethritis? | Azithromycin or doxycycline |
| Which is more likely to present with systemic symptoms and large joint involvement, patients with juvenile rheumatoid arthritis or adult onset rheumatoid arthritis? | JRA |
| Syndrome is characterized by IgG autoantibodies forming against glomerular basement membrane resulting in a linear pattern on immunofluorescence. | Goodpastures syndrome |
| What type of hypersensitivity is associated with serum sickness? | Type III; immune complex formation |
| What type of hypersensitivity is associated with delayed (cell mediated) reactions? | Type IV; T lymphocytes release lymphokines in response to antigen as opposed to the other 3 types which are all antibody mediated |
| What type of hypersensitivity is associated with IgE crosslinking leading to release of vasoactive amines? | Type I; anaphylactic reaction |
| What type of hypersensitivity is associated with antibody activation of cytotoxic T cells? | Type II; antibody mediated cytotoxicity |
| Patient presents with recurrent pyogenic infections, pruritic papulovesicular dermititis, and thrombocytopenia. Diagnosis? | Wiskott-Aldrich syndrome |
| Patient presents with hepatomegaly, splenomegaly, malaise, anemia, and weight loss after a trip to africa. Amastigotes are seen microscopically within macrophages. Diagnosis and treatment? | L. Donovani infection; sodium stibogluconate |
| What is the treatment for toxoplasmosis? | Sulfadiazine and pyrimethamine |
| What is the surface antigen found on pluripotent stem cells? | CD34 |
| What is the surface antigen found on helper T lymphocytes? | CD4 |
| What is the surface antigen found on cytotoxic T cells | CD8 |
| What is the surface antigen found on APC's and what receptor does it bind on T lymphocytes? | B7 binds CD28 on helper T lymphocytes |
| What virus commonly causes retrosternal pain radiating to back and arms that worsens on inspiration, also high pitched grating sound on lower left sternal border? | Clinical picture is of pericarditis; Common viral etiologic agent is coxsackie virus |
| Patient with a reaction to poison ivy has what type of hypersensitivity reaction? | Type IV; this means that the patient does not have a reaction on first exposure, but on second exposure symptoms will manifest (delayed) |
| Patient presents with diplopia and dysphagia, followed by general muscle weakness and respiratory muscle paralysis. Significant history of consumption of homemade jam. Etiologic agent? | Cloistridium botulinim |
| Patient presents with tender, swollen, and red left knee. Aspirate of synovial fluid is yellow and turbid (cloudy) with neutrophils predominant. Gram positive cocci also present. Etiologic agent? | Septic arthritis; commonly caused by S. aureus |
| An 8 yro boy presents with fever, sore throat, tonsillar exudates, tender anterior cervical lymph nodes. Etiologic agent? | Classic strep throat; Streptococcus pyogenes |
| What are the three vasculitides associated with antineutrophil cytoplasmic antibodies (ANCA)? | Microscopic polyangiitis, Wegener's granulomatosis and Churg-Strauss syndrome |
Created by:
rahjohnson
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